drawing on the child control

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- Previous
  - 1
    - Visual Studio .NET Returns Error When loading CSharpAddWinFormWiz.vsz When I try to add a new form using the solution explorer this is returned "Could not run the 'C:\Program(...)\VC#\CSharpProjectItems\LocalProjectItems\..\CSharpAddWinFormWiz.vsz'" , the file does not exist. I do not recall having touched nothing in the configuration that could cause this. Do I have to reinstall Visual Studio .NET ? Has my hard drive malfunctioned ? Thank You for any help. Sorry for wasting time, but if this is the hard drive... Tag: drawing on the child control Tag: 73750
  - 2
    - Display specific category in PropertyGrid Hi All, I would like to display ONLY a specific category in the PropertyGrid. Is this possible? If not, then, is there a way to suppress base class properties being displayed in the PropertyGrid? The base class in my case is a NODE object from FORMS namespace and I do not want its properties being displayed in my PropertyGrid. Therefore, I cannot change the "Browsable" attribute of properties in the Node class. Thanks in advance! Tag: drawing on the child control Tag: 73748
  - 3
    - How to make AxWebControl.Navigate work! When attempting to invoke "Navigate" on an AxWebControl that I programmatically created, I was getting an InvalidActiveXStateException exception. After searching around for a solution to the problem, I couldn't find one that worked reliably. I found a solution, deduced from the fact that the control seems to work fine when created by the designer, yet doesn't when created programmatically. I started with a working scenario in the designer and eliminated code until I found the solution below. I thought that I should post this solution, though I have no insight as to why it works. FWebBrowser = new AxSHDocVw.AxWebBrowser(); FWebBrowser.BeginInit(); // Seems to be critical the have the begin...end init FWebBrowser.Parent = <container>; FWebBrowser.EndInit(); object LTemp = null; FWebBrowser.Navigate(FURL, ref LTemp, ref LTemp, ref LTemp, ref LTemp); Tag: drawing on the child control Tag: 73746
  - 4
    - displaying data in list box Hi I have a form that has a list box bound to a Data view. When I add a record to the data table in run time, it is displayed in the list box as System.Data.DatarowView. When the app is saved and reloaded, the data appears properly. Any ideas on how to work around? Code Snippet to add the row to the data table <Snip> DataSetInfo.DetailsRow dr = this.dataSetInfo.Details.NewDetailsRow(); ... code to fill the fields this.dataSetInfo.Details.AddDetailsRow(dr); </Snip> Derrick Tag: drawing on the child control Tag: 73742
  - 5
    - Viewin HTML in Winform application I am looking for a way to view HTML in Winform application. Does anyone know if there is something like a browser control that I could use to render the HTML? Thanks, Serge. Tag: drawing on the child control Tag: 73737
  - 6
    - MDI Form inter children sizing issue, by design ? Hi! Here's my application: I have an MDI parent in which I open a child with WindowState = FormWindowState.Maximized. The child form hosts the WebBrowser control. When a user clicks on a link in the browser, I open up another child form like this: PopUpForm newPopForm = new PopUpForm(); newPopForm.MdiParent = this.MdiParent; e.ppDisp = newPopForm.webMain.Application; newPopForm.WindowState = FormWindowState.Normal; newPopForm.Visible = true; newPopForm.Focus(); As you can see, the WindowState on the new popup form is Normal. It works fine. However, the 1st child is no longer Maximized. It's WindowState becomes Normal as well. Question: Is it by design or I am doing something wrong? What can I do to keep the WindowState of the 1st child fixed from being changed by opening a new form? I mean the user can resize the 1st child, so I want 1st child to remain the same. I tried to save the WindowState and adjust it after I popup the new form. However, once I placed focus to the popup form, the 1st child lost its state. Please help me solve the mystery. Many Thanks in Advance, Tag: drawing on the child control Tag: 73735
  - 7
    - ListView, last item? Hi, i have un listview in a winform, multiselect = true. I would like to know which is the last item to select when it several item selected there. Best regards. Sylvain Tag: drawing on the child control Tag: 73733
  - 8
    - BeginInvoke calls EventHandler with different parameters than supplied Question, When using BeginInvoke (on a From to marshal to the UI thread) with the EventHandler delegate I see some strange behaviour. The problem is that I call the UpdateTextBox method with a class derived from EventArgs ( i.e. MyEventArgs) and when the BeginInvoke is called and the UpdateTextBox methode is call on the UI thread the parameter e (EventArgs) does not contain the derived MyEventArgs object but a EventArgs object. The strange thing is that if I create a delegate with the same signature as the EventHandler ( MyEventHandler) everything works as expected. (See comments in the code below) Can anyone explane this to me? Sandor (Methods below are implemented on a From derived class) private void button1_Click(object sender, System.EventArgs e) { Thread t = new Thread(new ThreadStart(OnThreadStart)); t.Start(); } private void OnThreadStart() { UpdateTextBox(null, new MyEventArgs(DateTime.Now.ToLongTimeString())); } private void UpdateTextBox(object sender, EventArgs e) { if(InvokeRequired) { // When using MyEventHandler everything works as expected. //MyEventHandler h = new MyEventHandler(UpdateTextBox); EventHandler h = new EventHandler(UpdateTextBox); BeginInvoke(h, new object[] {sender, e}); } else { // This cast will fail !!!!!!!!!!!!!!!!!!!!!! MyEventArgs args = (MyEventArgs)e; textBox1.Text = string.Format("Current time: {0}", args.CurrentTime); } } public class MyEventArgs : EventArgs { public readonly string CurrentTime; public MyEventArgs(string currentTime) { CurrentTime = currentTime; } } delegate void MyEventHandler(object sender, EventArgs e); Tag: drawing on the child control Tag: 73732
  - 9
    - Delegates & Events I need some clarrification. I have a class called ChatManager that will manage the interaction between the ClientUI (WinForm) and the chat server. The ChatManager will have a number of public events. When the ClientUI is instantiated it will subscribe to these events providing its own methods to be used as event handlers. In the ChatManager code when I raise a particular event...which in turn calls the delegate... Will the delegate execute on the same thread as the ClientUI (which it must do to update the WinForm) or does it execute on some other thread? Kyle! Tag: drawing on the child control Tag: 73725
  - 10
    - Anyone knows how to change the height of a ComboBox ? Hi all, I have modified a .NET (C#) ComboBox to display images along with text so I need to set the combo box height to values larger than default in order to show an image bigger than 16 pixel high. Changing the control height property is irrelevant. The only way I found to increase the height of the combo is to change the font size but that doesn't help me much because I need regular font size to display the items. Is there any other way to set the height?? Thanks, \T Tag: drawing on the child control Tag: 73716
  - 11
    - Shortcut for Refresh, F5 or symbolic code? Hello! I would like to introduce a keyboard shortcut for refreshing the user interface in many programs. In english locales it's often F5 which is used, but how about other locales and/or preferences. Should I simply bind the refresh feature to F5 or is there a symbolic Shortcut for refreshment? Comment: I think there must be symbolic key, because my IBM ThinkPad A31p has a refresh button which refreshes in Internet Explorer, but it does not work in my own program when I bind to F5, but F5 works perfectly of course. Any recommendations? Best regards, Henrik Dahl Tag: drawing on the child control Tag: 73705
  - 12
    - Datagrid: Binding to custom collection Hi, I´m binding an array of my own class to a datagrid. The problem I have is that I don´t know where I have to code the order of the columns (the public properties of my class). Datagrid sort them in a "weird" algorithm cause it does´t sort alphabetically or by ocurrence on the class. How can I tell the datagrid how to sort this columns (properties). Tag: drawing on the child control Tag: 73703
  - 13
    - Visual inheritance and .NET IDE Hi I create a abstract base class("MyBaseForm") which extends System.Windows.Forms.Form class. I add buttons,.... . I then extend another class("MyDerivedForm") from "MyBaseForm". This compiles fine, runs fine but as soon as I double click - MyDerivedForm - to view the form in the IDE designer - the IDE designer gives me an error. Is the a bug? I saw a similar post earlier with no suitable explanation. This is basically what we are trying to do. Create a base class with something like this: namespace MyFormClassLibrary { public abstract class MyBaseForm : System.Windows.Forms.Form { public MyBaseForm () { } } } Then create another Form and change the superclass from "System.Windows.Forms.Form " to the "MyPage" class created above: namespace MyFormClassLibrary { public class MyDerivedForm : MyBaseForm { public MyDerivedForm() { } } } Is there a fix for the IDE? Tag: drawing on the child control Tag: 73701
  - 14
    - So many fonts ... I have noticed that the Windows Forms Designer generates code that creates a new System.Drawing.Font object every time the Font property of a control is set to any value other than the default. Isn't this a terrible waste of system resources? Or are those mere flyweight objects, and the framework prevents needless resource duplication behind the scenes anyway? -- Gerhard Menzl Humans may reply by replacing the obviously faked part of my e-mail address with "kapsch". Tag: drawing on the child control Tag: 73698
  - 15
    - playing flash swf files using .NET C# greetings it is possible to use and display flash SWF files on .NET WinForms applications? If so, how? TIA Almeida Tag: drawing on the child control Tag: 73695
  - 16
    - Abuse of GDI+ resources Recently some friends were looking at some code written by an outside contractor. In the code, there was a great deal of use of pens and brushes without disposing of them. What surprised me is that the system never seemed to run out. The brushes and pens were being created in every paint event. I suppose it's possible that the garbage collector was getting around to them often enough to finalize the pens and brushes, but I doubt it was happening often enough to keep up with the use. I've always thought of pens and brushes as very limited system resources. Is that no longer the case with Gdi+? Also, in a similar vein, we were discussing the use of a static pen object to optimize drawing in a control. Is this considered acceptable? I mean, the pen (and I presume its underlying GDI+ handle) are going to be held for the lifetime of the app if it's static. Can someone help modernize my understanding of GDI? Pete Tag: drawing on the child control Tag: 73689
  - 17
    - Inheritance Hi everyone! Is there a way to inherit the System.ComponentModel.Design.CollectionEditor.CollectionForm form? So, something like: public class MyCollectionEditorForm : System.ComponentModel.Design.CollectionEditor.CollectionForm { } TIA, Vlado Tag: drawing on the child control Tag: 73685
  - 18
    - Menu and FormBorderStyle = None Hi I have a problem with menu and FormBorderStyle = None: I opened new C# project and set the property FormBorderStyle = None , And added main menu. When I run the application and on the last pixel of the menu, i have got a line drawn. This line divide the menu and the rest of the form. How can I make the line disappear? Thanks Rafi Tag: drawing on the child control Tag: 73683
  - 19
    - Application Signed with strongname cannot use an assembly which is not signed? Hello, I came across with a problem... I had developed a component which it's assembly does not have a keyfile for strong name... One of my customers tries to use it in an application where he attaches a keyfile for strong naming it and when compiling it he gets "Does Not have a strong file Name" error pointing my component's dll... Does anybody has a solution for this? Do I have to generate a strongname for my component? Thanks in adnvance, Özden Tag: drawing on the child control Tag: 73682
  - 20
    - Datagrid non navigable Quick question (I hope!) I've been seaarching around, but havent found a way to make a datagrid non-navigable. The databinding value, is set to a dataset and a table which has relations, however I do not want the "+" buttons to the left of the rows to be displayed? Thanks in advance. k Tag: drawing on the child control Tag: 73679
  - 21
    - Anchor Property Ignored On Custom Composite Controls I have a composite custom control (VB.NET) which is constructed of several other controls, such as command buttons, a listview etc. I have several controls which border the boundary of the container and have their anchor properties set accordingly, for example, ensuring a button stays on the right border when the control is resized. Now in the control's design view everything works correctly, controls are correctly repositioned. However, when I put the composite custom control on a form, the anchor properties are completely ignored, for example, in the form's design view when you resize the control, the child controls with the anchor property set don't move, and even in runtime the control has not correctly resized. Now obviously I could manually control things in the resize event, but this defeats the point of the anchor property, which works for single controls, so why not for a custom control. Has anyone else experienced this and found a solution or at least knows why it happens? Thanks In Advance, James Tag: drawing on the child control Tag: 73678
  - 22
    - ParkingWindow revisited This issue was already reported by several others but I did not find any useful solution / workaround. The problem happens in a random non-frequent manner when I run my WindowsForms application. I get the following exception: Cannot access a disposed object named "ParkingWindow" In another post in this NG titled "Derived combo box controls in forms - MessageBox.Show breaks the control's message routing" Clive Dixon describes a potential reason for the problem. However, no practical workaround is suggested. Could someone from MS suggest how to avoid this issue? Thanks in advance, -- Benzi (my application is multi-threaded, uses Invokes and is run with .Net 1.1) Tag: drawing on the child control Tag: 73677
  - 23
    - Issue with Data bound Text box validation I have a C# Windows forms application which uses XSD file created in memory dataset. On one of the forms I have bunch of text boxes to enter values for various columns of a table and they all are data bound. For one of text boxes value entered must be unique and I want to check this uniqueness as soon as user leaves corresponding text box after entering any value. I have tried following two methods and none seems to be working 1. If I try to attach a UniqueConstraint on corresponding column then it will not get fired until acceptchanges is not called and thus I cannot validate value as soon as user leaves field. 2. If I try to get a DataView with a rowfilter based upon value entered by user then it does not looks into rows which have â??modifiedâ?? or â??addedâ?? row state. I have tried to use all possible combination of DataViewRowState enumeration values but nothing seems to be able to force returned DataView to include modified or added status rows. Thus I get duplicate values in table So I have two questions â?? 1. Is it possible to enforce UniqueConstraint before AcceptChanges is called on Row / Table (may be in column changing event itself)? 2. What can cause an DataView to skip â??modifiedâ?? or â??addedâ?? row state rows even if DataViewRowState. CurrentRows has been specified for RowViewState of DataView? My apologies for possibly a vague explanation of my problem and thanks in advance for any thoughts. Tag: drawing on the child control Tag: 73676
  - 24
    - Issue with Data bound Text box validation (Sorry for some control charectors in last similar post) I have a C# Windows forms application which uses XSD file created in memory dataset. On one of the forms I have bunch of text boxes to enter values for various columns of a table and they all are data bound. For one of text boxes value entered must be unique and I want to check this uniqueness as soon as user leaves corresponding text box after entering any value. I have tried following two methods and none seems to be working 1. If I try to attach a UniqueConstraint on corresponding column then it will not get fired until acceptchanges is not called and thus I cannot validate value as soon as user leaves field. 2. If I try to get a DataView with a rowfilter based upon value entered by user then it does not looks into rows which have â??modifiedâ?? or â??addedâ?? row state. I have tried to use all possible combination of DataViewRowState enumeration values but nothing seems to be able to force returned DataView to include modified or added status rows. Thus I get duplicate values in table So I have two questions â?? 1. Is it possible to enforce UniqueConstraint before AcceptChanges is called on Row / Table (may be in column changing event itself)? 2. What can cause an DataView to skip â??modifiedâ?? or â??addedâ?? row state rows even if DataViewRowState. CurrentRows has been specified for RowViewState of DataView? My apologies for possibly a vague explanation of my problem and thanks in advance for any thoughts. KT --- Posted using Wimdows.net NntpNews Component - Post Made from http://www.DotNetJunkies.com/newsgroups Our newsgroup engine supports Post Alerts, Ratings, and Searching. Tag: drawing on the child control Tag: 73675
  - 25
    - ParkingWindow revisited This issue was already reported by many others. However, I did not find any useful solution / workaroud for this. The problem is that when you run a WindowsForms application, you may randomly get the following exception: Cannot access a disposed object named "ParkingWindow" In this NG there is some detailed description regarding this problem by Clive Dixon (titled "Derived combo box controls in forms - MessageBox.Show breaks the control's message routing") but no practical workaround is suggested. Could someone in MS suggest how to avoid this issue? Thanks in advance, -- Benzi (my application is multi-threaded, uses invokes, runs with framework 1.1) Tag: drawing on the child control Tag: 73674
- Next
  - 1
    - Issue with Data bound Text box validation I have a C# Windows forms application which uses XSD file created in memory dataset. On one of the forms I have bunch of text boxes to enter values for various columns of a table and they all are data bound. For one of text boxes value entered must be unique and I want to check this uniqueness as soon as user leaves corresponding text box after entering any value. I have tried following two methods and none seems to be working 1. If I try to attach a UniqueConstraint on corresponding column then it will not get fired until acceptchanges is not called and thus I cannot validate value as soon as user leaves field. 2. If I try to get a DataView with a rowfilter based upon value entered by user then it does not looks into rows which have â??modifiedâ?? or â??addedâ?? row state. I have tried to use all possible combination of DataViewRowState enumeration values but nothing seems to be able to force returned DataView to include modified or added status rows. Thus I get duplicate values in table So I have two questions â?? 1. Is it possible to enforce UniqueConstraint before AcceptChanges is called on Row / Table (may be in column changing event itself)? 2. What can cause an DataView to skip â??modifiedâ?? or â??addedâ?? row state rows even if DataViewRowState. CurrentRows has been specified for RowViewState of DataView? My apologies for possibly a vague explanation of my problem and thanks in advance for any thoughts. KT --- Posted using Wimdows.net NntpNews Component - Post Made from http://www.DotNetJunkies.com/newsgroups Our newsgroup engine supports Post Alerts, Ratings, and Searching. Tag: drawing on the child control Tag: 73673
  - 2
    - Smart client template solution ??? HI! I am currently at the beginning of a new project and I would like to start with something out of the box. As we started our Web project we used IBuySpy Portal and it worked fine because we did not waste our time on authentification, authorisation and all that but we were able to start right wit the logic of the application. Is there something like that for SmartClient? I mean template solution containing the newest application blocks of Microsoft? Any comments or help will be highly appreciated. gicio Tag: drawing on the child control Tag: 73671
  - 3
    - Change Cell Style Hi! I want to change the cell style of a datagrid. I only want to change the cell (5,5) and set the forecolor RED. How can I do?? Thx. Tag: drawing on the child control Tag: 73669
  - 4
    - Custom TabContrl and TabStrip Problem Hi, I have a prolem please see if u can suggest something. I am developing a TabControl derived from Control. It consists of other control called TabStrip which is also derived frm control. My TabControl can be aligned vertically or horizontally. When it is horizontal i am docking TabStrip at the Top of the TabControl. When the alignment is changed am docking it at the Right so that it becomes Vertical. When am setting the Alignment of the TabControl to Vertical, the tabstrip is docked to the right inside the TabControl so that the tabs are shown vertically. Now when i am using my TabControl it is working fine in designer mode, when am toggleing between horizontal and vertical. But when i run the application the tabStrip's ( even though it is docked at the Right) location becomes (0,0) and it is show to the Left. Don't know why it's location becomes (0,0) whe i run the applicatiion.??? And whern i click on the Tab then it goes to the Right. However, when in Design mode it shows very well to the Right. --Nilesh Tag: drawing on the child control Tag: 73667
  - 5
    - Custom TabControl using TabStrip and Dock probelm I am developing a TabControl derived from Control. It consists of other control called TabStrip which is also derived frm control. My TabControl can be aligned vertically or horizontally. When it is horizontal i am docking TabStrip at the Top of the TabControl. When the alignment is changed am docking it at the Right so that it becomes Vertical. When am setting the Alignment of the TabControl to Vertical, the tabstrip is docked to the right inside the TabControl so that the tabs are shown vertically. Now when i am using my TabControl it is working fine in designer mode, when am toggleing between horizontal and vertical. But when i run the application the tabStrip's ( even though it is docked at the Right) location becomes (0,0) and it is show to the Left. Don't know why it's location becomes (0,0) whe i run the applicatiion.??? And whern i click on the Tab then it goes to the Right. However, when in Design mode it shows very well to the Right. Any one can please help me suggest what's going wrong here?? --Nilesh Tag: drawing on the child control Tag: 73666
  - 6
    - Cuatom TabControl using TabStrip and Docking Problem I am developing a TabControl derived from Control. It consists of other control called TabStrip which is also derived frm control. My TabControl can be aligned vertically or horizontally. When it is horizontal i am docking TabStrip at the Top of the TabControl. When the alignment is changed am docking it at the Right so that it becomes Vertical. When am setting the Alignment of the TabControl to Vertical, the tabstrip is docked to the right inside the TabControl so that the tabs are shown vertically. Now when i am using my TabControl it is working fine in designer mode, when am toggleing between horizontal and vertical. But when i run the application the tabStrip's ( even though it is docked at the Right) location becomes (0,0) and it is show to the Left. Don't know why it's location becomes (0,0) whe i run the applicatiion.??? And whern i click on the Tab then it goes to the Right. However, when in Design mode it shows very well to the Right. Any one can please help me suggest what's going wrong here?? --Nilesh Tag: drawing on the child control Tag: 73665
  - 7
    - TabStrip TabControl and Docking Problem... I am developing a TabControl derived from Control. It consists of other control called TabStrip which is also derived frm control. My TabControl can be aligned vertically or horizontally. When it is horizontal i am docking TabStrip at the Top of the TabControl. When the alignment is changed am docking it at the Right so that it becomes Vertical. When am setting the Alignment of the TabControl to Vertical, the tabstrip is docked to the right inside the TabControl so that the tabs are shown vertically. Now when i am using my TabControl it is working fine in designer mode, when am toggleing between horizontal and vertical. But when i run the application the tabStrip's ( even though it is docked at the Right) location becomes (0,0) and it is show to the Left. Don't know why it's location becomes (0,0) whe i run the applicatiion.??? And whern i click on the Tab then it goes to the Right. However, when in Design mode it shows very well to the Right. Any one can please help me suggest what's going wrong here?? --Nilesh Tag: drawing on the child control Tag: 73664
  - 8
    - Docking and Custom TabControl Problem... I am developing a TabControl derived from Control. It consists of other control called TabStrip which is also derived frm control. My TabControl can be aligned vertically or horizontally. When it is horizontal i am docking TabStrip at the Top of the TabControl. When the alignment is changed am docking it at the Right so that it becomes Vertical. When am setting the Alignment of the TabControl to Vertical, the tabstrip is docked to the right inside the TabControl so that the tabs are shown vertically. Now when i am using my TabControl it is working fine in designer mode, when am toggleing between horizontal and vertical. But when i run the application the tabStrip's ( even though it is docked at the Right) location becomes (0,0) and it is show to the Left. Don't know why it's location becomes (0,0) whe i run the applicatiion.??? And whern i click on the Tab then it goes to the Right. However, when in Design mode it shows very well to the Right. Any one can please help me suggest what's going wrong here?? --Nilesh Tag: drawing on the child control Tag: 73663
  - 9
    - NullReferenceException in UnsafeNativeMethods.CreateWindowEx Hi all, I have the following situation. I create AppDomains on demand to host winform based controls from C++ host. I'm using .NET 1.1. I tried to do AppDomain.Unload from background thread to free up the main GUI thread and make it more responsive. When I try this, I get the exception, listed below, always on the 3rd AppDomain and control creation. I tried getting SystemEvents through reflection and calling Shutdown manually. This delays the problem. It almost doesn't happen, but still re-appears sometimes. This doesn't reproduce in .NET 2.0 alpha. Is there any way I can work around this bug/limitation? I also would like to know what is being null inside the UnsafeNativeMethods.CreateWindowEx or under what conditions. Maybe I can work around the problem. Thank you in advance for any help on this Exception trace: ------------------ System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.TypeInitializationException: The type initializer for "System.Drawing.SafeNativeMethods" threw an exception. ---> System.NullReferenceException: Object reference not set to an instance of an object. at Microsoft.Win32.UnsafeNativeMethods.CreateWindowEx(Int32 exStyle, String lpszClassName, String lpszWindowName, Int32 style, Int32 x, Int32 y, Int32 width, Int32 height, HandleRef hWndParent, HandleRef hMenu, HandleRef hInst, Object pvParam) at Microsoft.Win32.SystemEvents.CreateBroadcastWindow() at Microsoft.Win32.SystemEvents.Initialize() at Microsoft.Win32.SystemEvents.EnsureSystemEvents(Boolean requireHandle, Boolean throwOnRefusal) at Microsoft.Win32.SystemEvents.AddEventHandler(Int32 key, Delegate value) at Microsoft.Win32.SystemEvents.add_EventsThreadShutdown(EventHandler value) at System.Drawing.SafeNativeMethods.Initialize() at System.Drawing.SafeNativeMethods..cctor() --- End of inner exception stack trace --- at System.Drawing.SafeNativeMethods.get_ThreadData() at System.Drawing.SystemBrushes.FromSystemColor(Color c) at System.Drawing.SystemBrushes.get_Window() at System.Windows.Forms.DataGridTableStyle.get_DefaultAlternatingBackBrush() at System.Windows.Forms.DataGridTableStyle..ctor(Boolean isDefaultTableStyle) at System.Windows.Forms.DataGrid..ctor() at DotNetControls.MainControl.InitializeComponent() at DotNetControls.MainControl..ctor() --- End of inner exception stack trace --- Server stack trace: at System.RuntimeType.CreateInstanceImpl(Boolean publicOnly) at System.Activator.CreateInstance(Type type, Boolean nonPublic) at System.RuntimeType.CreateInstanceImpl(BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes) at System.Activator.CreateInstance(Type type, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes) at System.Activator.CreateInstance(String assemblyName, String typeName, Boolean ignoreCase, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes, Evidence securityInfo, StackCrawlMark& stackMark) at System.Activator.CreateInstance(String assemblyName, String typeName) at System.AppDomain.CreateInstance(String assemblyName, String typeName) at System.AppDomain.CreateInstanceAndUnwrap(String assemblyName, String typeName) at System.Runtime.Remoting.Messaging.StackBuilderSink.PrivateProcessMessage(Met hodBase mb, Object[] args, Object server, Int32 methodPtr, Boolean fExecuteInContext, Object[]& outArgs) at System.Runtime.Remoting.Messaging.StackBuilderSink.SyncProcessMessage(IMessa ge msg, Int32 methodPtr, Boolean fExecuteInContext) Exception rethrown at [0]: at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg) at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type) at System.AppDomain.CreateInstanceAndUnwrap(String assemblyName, String typeName) at Adapter.CreateApp() in ... Tag: drawing on the child control Tag: 73660
  - 10
    - Button swallows keys. Bug? Workaround? The Setup: ================ I have a cardswiper attached to my keyboard, so that when I swipe a card I get "keyboard input" that looks something like: %748a45a1246fbac9d8fdeaf3572f221b? I would like forms in my application to handle these card swipes. To this end, I've made a base Form that sets KeypPeview=true, and that overrides the ProcessDialogKey method. The Bug: ========== This setup works well, except in a few circumestances. One common circumstance is if I have buttons with shortcuts (e.g. a button whose Text attribute is "&add member". Here "a" is a shortcut. I have noticed that if any button on the form has the focus, then "a" is consumed by the button and does not make it to ProcessDialogKey. If something else (like a listbox) has the focus, then I do receive the key in ProcessDialogKey. Does anyone have a solution, an idea, or a workaround? Thanks in advance! Felix Tag: drawing on the child control Tag: 73659
  - 11
    - Proxy servers and embedded windows control in IE Hi there, I have a windows control embedded in a web page using the <object> tag. The control sometimes needs to access an aspx page using HttpWebRequest/Response (aspx page is located on the same web server that the .dll file is located in). This works perfectly when the client is not connecting through a proxy server. When the client is connected to the web via a proxy server, myHttpWebRequest.GetResponse() would fail with a 407 Authentication Required. I realize that any HttpWebRequest object has a Proxy property, but whenever I tried to access it I got a SecurityException (Request for type WebPermission failed). So to temporarily get past this problem, I gave the dll FullTrust for my computer. Now no exception is thrown when I try to access the Proxy property. New problem. I got the proxy information using GetDefaultProxy(). It is able to grab the address for the proxy server because I was able to do MessageBox.Show(proxyObject.Address.ToString()). So I *assume* I have the proxy information. However, when I try to do a myHttpWebRequest.GetResponse(), I still get a 407 Authorization required error. There does not seem to be any login/password for the proxy server... or if there is, I don't know how to find it. So is the cause of the problem because the proxy server thinks that whatever is running the dll (I assume the JIT compiler or whatever) is trying to access the proxy server? Or if not, what is the problem and how do I go about fixing it? Thanks, Wendy Tag: drawing on the child control Tag: 73658
  - 12
    - adding a control to a form I converted a VB6 control to .NET using aximp. The converted control can be added to the toolbox. However, when I tried to add the control onto a form, VS throws the following error: "The .NET assembly 'Name.Interop.mycontrol' could not be found". Nevertheless, the converted control will be successfully added to the form in the second trial. Does anyone know how to fix this problem? Tag: drawing on the child control Tag: 73657
  - 13
    - Form scrolling problem I have a child form that has autoscroll set to true. However, when the mdi parent is maximized and the child form is maximized, no scroll bars appear, even though there is more controls and data below the visible area. Is there a way to scroll the child form and/or the mdi parent when both are maximized? Thanks for any help. Bernie Yaeger Tag: drawing on the child control Tag: 73655
  - 14
    - Forms question (.) I've created a custom control. And now I've done something that prevents me from using the designer to layout controls on my custom control. I tried deleting the .resx file, thinking the VS would just regenerate it, but did not. Here's how I got the problem: I created a new user control. I called it BaseControl. I created another new user control. I called it DerivedControl. After VS generated the .cs file, I changed the base class to BaseControl. EG: public class BaseControl : System.Windows.Forms.Control public class DerivedControl : BaseControl Now I am unable to add controls to DerivedControl using the designer. I have to manually create the code in .cs file. This gets really hard to lay things out. So, what I can do so that I can use the designer? Thnx Matt Tag: drawing on the child control Tag: 73653
  - 15
    - ComboBox Datasource problem Hi, i am having a little problem with a combobox that i set his datasource property to a collection, but doesn populate its items, the strange thing is that i do the same thing on a datagrid and it works fine. Take a look: Public Class Account Public Sub New(ByVal txtname As String, ByVal txtamount As Double) name = txtname amount = txtamount End Sub End Class **************************************** Dim Accounts As New Collection() Dim NewAccount As New Account("numer1", 1000) Accounts .Add(NewAccount , 1) Dim AnotherAccount As New Account("numer2", 2000) Accounts .Add(AnotherAccount , 2) ******************************************* Me.ComboBox.DataSource = Nothing Me.ComboBox.DataSource = Accounts Me.ComboBox.DisplayMember = "Name" Me.ComboBox.ValueMember = "Amount" -----Error "An unhandled exeception of type 'System.InvalidCastException ocurred in microsoft.visualbasic.dll Cast from type 'Microsoft.VisualBasic.Collection' to type 'Object()' is not valid'" Any ideas? why i can set the same datasource for a datagrid and the is no error showing? am i manipulating wrong the collection? Any suggestion will help. Thanks for your time Tag: drawing on the child control Tag: 73652
  - 16
    - Change Cursor over ActiveX control Hello, I am trying to build a form that can display HTML content in the background and various controls in the foreground. I am able to achieve this using the WebBrowser activex and adding foreground controls to the form. So far everything is ok. My problem is that I want to control the Cursor over the controls and the background. Since the WebBroser (my background) is an activex, I cannot control it's cursor! I had also problems in this configuration with mouse events, but thanks to you guys that one is now solved with IMessageFilter. So my question is: How can I control the cursor shape over an ActiveX control? Thanks Tag: drawing on the child control Tag: 73651
  - 17
    - Disable Performance Counters Hi Could anybody please explain the implecations of setting the value " HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\PerfProc\Performance\Di sable Performance Counters" to false on a Win2k server. Regards Ash. Tag: drawing on the child control Tag: 73649
  - 18
    - Problem: HowTo update UI from workerThread? Hi! I want to update an userinterface from a background thread. I think that a good way to do this is to use to use methodinvoker in UI-thread and then begininvoke in workerThread to pass parameters back and update the UI. But i have one question. The Method i start with begininvoke is a public sub on another class (not the UI-class). Do I have to pass the form (like a reference) to the other class which the workerthread uses to be able to use it´s begininvoke method? Is this a good way to do this. Here is my code: Public Class Form1 Inherits System.Windows.Forms.Form #Region " Windows Form Designer generated code " ' Some code Me.Label1 = New System.Windows.Forms.Label ' Some more code #End Region Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim workerThread As New MyWorkerClass Dim mi As MethodInvoker = New MethodInvoker(AddressOf workerThread.StartWork) mi.BeginInvoke(Nothing, Nothing) End Sub Public Sub UpdateLabel(ByVal o As Object, ByVal e As System.EventArgs) Dim myEvent As MyLabelEvent = CType(e, MyLabelEvent) Label1.Text = e.LabelText() End Sub End Class Public Class MyWorkerClass Public Sub StartWork() Dim e As System.EventArgs While True e = New MyLabelEvent("Text on label") Dim lst As Object() = {Me, e} ???.BeginInvoke(New System.EventHandler(AddressOf ???.UpdateLabel), lst) DoSomeWork() End While End Sub Public Sub DoSomeWork() End Sub End Class Public Class MyLabelEvent Inherits System.EventArgs Private _labelText As String Public Sub New(ByVal label As String) MyBase.New() _labelText = label End Sub Public Property LabelText() As String Get Return _labelText End Get Set(ByVal Value As String) _labelText = Value End Set End Property End Class Best Regards / Steve Tag: drawing on the child control Tag: 73637
  - 19
    - Microsoft Application Block pattern Long shot but here goes..... I am developing a vb.net application using the MS application block pattern, available @ http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnpag/html/uipab-ch03.asp And I have developed some views that derive of Microsoft.ApplicationBlocks.UIProcess.WindowsFormView BUT I am unable to get any key press events, I want to stop the user pressing the Alt+F4 key to close the application, I can do this in a normal application very easily so don't bother replying with a simple example, what I want to know is why I'm not getting the events when using the application block patterm? the application block is written in C# and I have tried overriding the the KeyDown method in the application block but don't get any event being caught there either. Anyone got any ideas? Cheers for any help in advance Ollie any example class is shown below.... Public Class Welcome Inherits Microsoft.ApplicationBlocks.UIProcess.WindowsFormView .... .... .... Protected Overrides Sub OnKeyDown(ByVal e As KeyEventArgs) If e.KeyCode = Keys.Alt Then ErrorHandler.ProcessError("ALT PRESSED") Else MyBase.OnKeyDown(e) End If End Sub Tag: drawing on the child control Tag: 73636
  - 20
    - how to lock focus of a form Hello I put my Options on e separated form and want to lock the focus on it until user click ok or cancel, i mean deactivate the main form when option form is shown (like IE option or most of the windows applications). how`? Tag: drawing on the child control Tag: 73634
  - 21
    - MDI and Word application I would like to open a Word application into a MDI application. I do this : Word.ApplicationClass WordApp = new Word.ApplicationClass(); WordApp.Visible = true; WordApp.Activate(); How can I open the object WordApp into a MDI application? Tag: drawing on the child control Tag: 73632
  - 22
    - MDI Menus Bug? Hi all, I've found a straing error (NullReferenceException) in a MDI Environment with two children merging menu with the MDI Container. By changing active child from one with menu to other without I finally get the exception. Anybody knows if menu merging is unstable? I'm using VC# and NET Framework 1.1 on XP Pro. TIA. Julio Tag: drawing on the child control Tag: 73630
  - 23
    - MDI Menus Bug? Hi all, I've found a straing error (NullReferenceException) in a MDI Environment with two children merging menu with the MDI Container. By changing active child from one with menu to other without I finally get the exception. Anybody knows if menu merging is unstable? I'm using VC# and NET Framework 1.1 on XP Pro. TIA. Julio Tag: drawing on the child control Tag: 73629
  - 24
    - Control .exe Hi I want to make a small application who stop launch a .exe always in 8:00 AM and 11:59 AM How i can do that ? -- Ceci est une signature automatique de MesNews. Site : http://mesnews.no-ip.com Tag: drawing on the child control Tag: 73623
  - 25
    - TabControl - change the tab shapes and appearances? I have tried without success (using C#) to change the standard rectangular tabs (for the TabPages) to look like the ones in Messenger - funky curved jobs. However whenever I try to overwrite an existing tab, either by superimposing a bitmap over it, or by manually drawing a new shape with the Graphics methods, the standard rectangular tab outline always shows through. I captured both the DrawItem and Paint events. I saw a partial solution in Code Project, which used a wrapper DLL around UxThemes.dll, but this involves installing this extra DLL with my product. And I couldn't get it to work anyway! It seems this is a known problem in .NET. A colleague using C++/MFC had no trouble doing this. Any suggestions? - please! Tag: drawing on the child control Tag: 73620

I am creating a form designer, I want to be able to draw a temporary
selction rect in the window, over all the child control.

I have a HWND of the window, I get a HDC.
I call PatBlt() to do my XOR drawing.

However the drawing only paint the empty are of the form, it doesn't alter
child control.

How could I paint over them ?

--
Lloyd Dupont, Software Architect
Get Your Data Mobile
http://www.ihookdb.com

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Re: drawing on the child control by Louis

Louis
Thu Jun 24 01:27:08 CDT 2004

maybe the parent hwnd has ws_clipchildren set. if so, maybe try removing
it.

--
Louis Solomon
www.steelbytes.com

"Lloyd Dupont" <ld@NewsAccount.galador.net> wrote in message
news:eyYdsLaWEHA.3120@TK2MSFTNGP12.phx.gbl...
>I am creating a form designer, I want to be able to draw a temporary
> selction rect in the window, over all the child control.
>
> I have a HWND of the window, I get a HDC.
> I call PatBlt() to do my XOR drawing.
>
> However the drawing only paint the empty are of the form, it doesn't alter
> child control.
>
> How could I paint over them ?
>
> --
> Lloyd Dupont, Software Architect
> Get Your Data Mobile
> http://www.ihookdb.com
>
>

Top

Re: drawing on the child control by Lloyd

Lloyd
Thu Jun 24 20:24:09 CDT 2004

thanks for that tip, it works great !

"Louis Solomon [SteelBytes]" <louis@steelbytes.spam-is-bad.com> wrote in
message news:%23r0AIRbWEHA.3716@TK2MSFTNGP11.phx.gbl...
> maybe the parent hwnd has ws_clipchildren set. if so, maybe try removing
> it.
>
> --
> Louis Solomon
> www.steelbytes.com
>
>
> "Lloyd Dupont" <ld@NewsAccount.galador.net> wrote in message
> news:eyYdsLaWEHA.3120@TK2MSFTNGP12.phx.gbl...
> >I am creating a form designer, I want to be able to draw a temporary
> > selction rect in the window, over all the child control.
> >
> > I have a HWND of the window, I get a HDC.
> > I call PatBlt() to do my XOR drawing.
> >
> > However the drawing only paint the empty are of the form, it doesn't
alter
> > child control.
> >
> > How could I paint over them ?
> >
> > --
> > Lloyd Dupont, Software Architect
> > Get Your Data Mobile
> > http://www.ihookdb.com
> >
> >
>
>

Top