v-yiy
Tue Oct 28 01:07:06 CST 2003
Hi abhishek,
In fact, this issue also occurred in native win32 application, it by design.
The system sometimes delivers a WM_MOUSEMOVE message even if the mouse
hasn't moved. Programs which are sensitive to physical mouse movement (such
as screen savers) should compare the coordinates in the WM_MOUSEMOVE
message with the coordinates from the previous mouse message and ignore the
message if they are the same.
The Document didn't make this clear, we already noticed this problem, it
mightbe fixed in the next release of the document.Thanks for your reporting.
If you need handle the real OnMouseMove event you need first check if the
point of the cursor is same as the previous one. the code should be
executed only when the values are different.
Thanks!
Best regards,
Ying-Shen Yu [MSFT]
Microsoft Online Partner Support
Get Secure! - www.microsoft.com/security
This posting is provided "AS IS" with no warranties and confers no rights.
You should not reply this mail directly, "Online" should be removed before
sending, Thanks!
--------------------
| From: "abhishek ghuwalewala" <abhishekg.nospam@nospam.mail.com>
| References: <uV#BF5bmDHA.2592@TK2MSFTNGP10.phx.gbl>
<mWgycKfmDHA.2808@cpmsftngxa06.phx.gbl>
<#o2aiikmDHA.372@TK2MSFTNGP11.phx.gbl>
<Km#qNuFnDHA.2624@cpmsftngxa06.phx.gbl>
| Subject: Re: BeginUpdate/EndUpdate causing mouse move
| Date: Mon, 27 Oct 2003 10:29:09 -0600
| Lines: 348
| X-Priority: 3
| X-MSMail-Priority: Normal
| X-Newsreader: Microsoft Outlook Express 6.00.2800.1158
| X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165
| Message-ID: <O8N#zdKnDHA.360@TK2MSFTNGP12.phx.gbl>
| Newsgroups: microsoft.public.dotnet.framework.windowsforms
| NNTP-Posting-Host: client-79-20.natinst.com 130.164.79.20
| Path: cpmsftngxa06.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFTNGP12.phx.gbl
| Xref: cpmsftngxa06.phx.gbl
microsoft.public.dotnet.framework.windowsforms:55305
| X-Tomcat-NG: microsoft.public.dotnet.framework.windowsforms
|
| As I had mentioned before, this behavior does not reproduce for the
ListBox
| control. Would you happen to know what the ListBox control is doing that
| prevents this from happening?
|
| Abhishek
|
| "Ying-Shen Yu[MSFT]" <v-yiy@online.microsoft.com> wrote in message
| news:Km%23qNuFnDHA.2624@cpmsftngxa06.phx.gbl...
| > Hi abhishek,
| > Thanks for your sample, I reproed your problem now.
| > For now, I haven't found a way to prevent MouseMove method to be called.
| > However, since BeginUpdate/Endupate is called by yourself, could you
add a
| > boolean flag before actually executing your codes in the MouseMove?
| > such as
| > InUpdating = false;
| > void BeginUpdate()
| > {
| > InUpdating = true;
| > SendMessage ....
| > }
| > void EndUpdate()
| > {
| > SendMessage() ...
| > InUpdating = false;
| > }
| > void MouseMove( ....)
| > {
| > if(!IsUpdating)
| > {
| > DoMouseMove();
| > }
| > }
| >
| > Does this work around solve your problem?
| > Please be free to post on the group, if you still have problem on this
| > issue.
| > Thanks!
| >
| > Best regards,
| >
| > Ying-Shen Yu [MSFT]
| > Microsoft Online Partner Support
| > Get Secure! - www.microsoft.com/security
| >
| > This posting is provided "AS IS" with no warranties and confers no
rights.
| > You should not reply this mail directly, "Online" should be removed
before
| > sending, Thanks!
| >
| > --------------------
| > | From: "abhishek ghuwalewala" <abhishekg.nospam@nospam.mail.com>
| > | References: <uV#BF5bmDHA.2592@TK2MSFTNGP10.phx.gbl>
| > <mWgycKfmDHA.2808@cpmsftngxa06.phx.gbl>
| > | Subject: Re: BeginUpdate/EndUpdate causing mouse move
| > | Date: Fri, 24 Oct 2003 11:05:22 -0500
| > | Lines: 638
| > | X-Priority: 3
| > | X-MSMail-Priority: Normal
| > | X-Newsreader: Microsoft Outlook Express 6.00.2800.1158
| > | X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165
| > | Message-ID: <#o2aiikmDHA.372@TK2MSFTNGP11.phx.gbl>
| > | Newsgroups: microsoft.public.dotnet.framework.windowsforms
| > | NNTP-Posting-Host: client-64-158.natinst.com 130.164.64.158
| > | Path:
| >
|
cpmsftngxa06.phx.gbl!cpmsftngxa09.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFTNGP11.
| > phx.gbl
| > | Xref: cpmsftngxa06.phx.gbl
| > microsoft.public.dotnet.framework.windowsforms:55191
| > | X-Tomcat-NG: microsoft.public.dotnet.framework.windowsforms
| > |
| > | Ying-Shen,
| > |
| > | Thanks for your prompt reply. I am attaching a small sample project
that
| > | reproduces the problem. The instructions for reproducing the problem
are
| > | described in the application.
| > |
| > | Thanks,
| > | Abhishek
| > |
| > | "Ying-Shen Yu[MSFT]" <v-yiy@online.microsoft.com> wrote in message
| > | news:mWgycKfmDHA.2808@cpmsftngxa06.phx.gbl...
| > | > Hi abhishek.
| > | > Thanks for your post!
| > | > You mean your mousemove event of your control or your form is fired
| when
| > | > you invoke the P/Invoke SendMessage
| > | > method?
| > | > I made a small program and tried to repro your problem, however I
| didn't
| > | > get any mouse move event on the user control or on the Form when
| > invoking
| > | > these two methods.
| > | > I pasted my test code after the signature, you may try it on your
| > system.
| > | > Probably it will be helpful if you could give me a
| > | > small sample project to repro this problem.
| > | >
| > | > Thanks for using MSDN Newsgroup!!
| > | >
| > | > Best regards,
| > | >
| > | > Ying-Shen Yu [MSFT]
| > | > Microsoft Online Partner Support
| > | > Get Secure! - www.microsoft.com/security
| > | >
| > | > This posting is provided "AS IS" with no warranties and confers no
| > rights.
| > | > You should not reply this mail directly, "Online" should be removed
| > before
| > | > sending, Thanks!
| > | >
| > | > <code file="MyUserControl.cs">
| > | > using System;
| > | > using System.Collections;
| > | > using System.ComponentModel;
| > | > using System.Drawing;
| > | > using System.Data;
| > | > using System.Windows.Forms;
| > | > using System.Runtime.InteropServices;
| > | >
| > | > namespace WinForm_BeginEndUpdate_MouseMove
| > | > {
| > | > /// <summary>
| > | > /// Summary description for MyUserControl.
| > | > /// </summary>
| > | > public class MyUserControl : System.Windows.Forms.UserControl
| > | > {
| > | > /// <summary>
| > | > /// Required designer variable.
| > | > /// </summary>
| > | > private System.ComponentModel.Container components = null;
| > | >
| > | > public MyUserControl()
| > | > {
| > | > // This call is required by the Windows.Forms Form Designer.
| > | > InitializeComponent();
| > | >
| > | > // TODO: Add any initialization after the InitializeComponent call
| > | >
| > | > }
| > | >
| > | > /// <summary>
| > | > /// Clean up any resources being used.
| > | > /// </summary>
| > | > protected override void Dispose( bool disposing )
| > | > {
| > | > if( disposing )
| > | > {
| > | > if(components != null)
| > | > {
| > | > components.Dispose();
| > | > }
| > | > }
| > | > base.Dispose( disposing );
| > | > }
| > | >
| > | > #region Component Designer generated code
| > | > /// <summary>
| > | > /// Required method for Designer support - do not modify
| > | > /// the contents of this method with the code editor.
| > | > /// </summary>
| > | > private void InitializeComponent()
| > | > {
| > | > //
| > | > // MyUserControl
| > | > //
| > | > this.BackColor = System.Drawing.SystemColors.Desktop;
| > | > this.Name = "MyUserControl";
| > | > this.Size = new System.Drawing.Size(368, 424);
| > | >
| > | > }
| > | > #endregion
| > | >
| > | > private class NativeMethods
| > | > {
| > | > [DllImport("user32.dll")]
| > | > private extern static int SendMessage(IntPtr hwnd, uint nMsg,
| > | > int wParam, int lParam);
| > | > private const int WM_SETREDRAW = 0x000B;
| > | > public static void BeginUpdate(IntPtr hwnd)
| > | > {
| > | > SendMessage(hwnd,WM_SETREDRAW,0,0);
| > | > }
| > | > public static void EndUpdate(IntPtr hwnd)
| > | > {
| > | > SendMessage(hwnd,WM_SETREDRAW,-1,0);
| > | > }
| > | >
| > | > }
| > | >
| > | >
| > | > public void BeginUpdate()
| > | > {
| > | > NativeMethods.BeginUpdate(Handle);
| > | > }
| > | > public void EndUpdate()
| > | > {
| > | > NativeMethods.EndUpdate(Handle);
| > | > }
| > | >
| > | >
| > | > protected override void OnMouseMove(MouseEventArgs e)
| > | > {
| > | > base.OnMouseMove (e);
| > | > System.Diagnostics.Debug.WriteLine("MouseMove received");
| > | > }
| > | > public void DoUpdate()
| > | > {
| > | > Graphics g = CreateGraphics();
| > | > g.FillRectangle(Brushes.Indigo,this.Bounds);
| > | > g.Dispose();
| > | > }
| > | > }
| > | > }
| > | > </code>
| > | > <code file="Form1.cs">
| > | > using System;
| > | > using System.Drawing;
| > | > using System.Collections;
| > | > using System.ComponentModel;
| > | > using System.Windows.Forms;
| > | > using System.Data;
| > | >
| > | > namespace WinForm_BeginEndUpdate_MouseMove
| > | > {
| > | > /// <summary>
| > | > /// Summary description for Form1.
| > | > /// </summary>
| > | > public class Form1 : System.Windows.Forms.Form
| > | > {
| > | > private WinForm_BeginEndUpdate_MouseMove.MyUserControl
myUserControl1;
| > | > private System.Timers.Timer timer1;
| > | > /// <summary>
| > | > /// Required designer variable.
| > | > /// </summary>
| > | > private System.ComponentModel.Container components = null;
| > | >
| > | > public Form1()
| > | > {
| > | > //
| > | > // Required for Windows Form Designer support
| > | > //
| > | > InitializeComponent();
| > | >
| > | > //
| > | > // TODO: Add any constructor code after InitializeComponent call
| > | > //
| > | > }
| > | >
| > | > /// <summary>
| > | > /// Clean up any resources being used.
| > | > /// </summary>
| > | > protected override void Dispose( bool disposing )
| > | > {
| > | > if( disposing )
| > | > {
| > | > if (components != null)
| > | > {
| > | > components.Dispose();
| > | > }
| > | > }
| > | > base.Dispose( disposing );
| > | > }
| > | >
| > | > #region Windows Form Designer generated code
| > | > /// <summary>
| > | > /// Required method for Designer support - do not modify
| > | > /// the contents of this method with the code editor.
| > | > /// </summary>
| > | > private void InitializeComponent()
| > | > {
| > | > this.myUserControl1 = new
| > | > WinForm_BeginEndUpdate_MouseMove.MyUserControl();
| > | > this.timer1 = new System.Timers.Timer();
| > | >
((System.ComponentModel.ISupportInitialize)(this.timer1)).BeginInit();
| > | > this.SuspendLayout();
| > | > //
| > | > // myUserControl1
| > | > //
| > | > this.myUserControl1.BackColor = System.Drawing.SystemColors.Desktop;
| > | > this.myUserControl1.Location = new System.Drawing.Point(72, 64);
| > | > this.myUserControl1.Name = "myUserControl1";
| > | > this.myUserControl1.Size = new System.Drawing.Size(256, 240);
| > | > this.myUserControl1.TabIndex = 2;
| > | > //
| > | > // timer1
| > | > //
| > | > this.timer1.Enabled = true;
| > | > this.timer1.Interval = 500;
| > | > this.timer1.SynchronizingObject = this;
| > | > this.timer1.Elapsed += new
| > | > System.Timers.ElapsedEventHandler(this.timer1_Elapsed);
| > | > //
| > | > // Form1
| > | > //
| > | > this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
| > | > this.ClientSize = new System.Drawing.Size(408, 421);
| > | > this.Controls.Add(this.myUserControl1);
| > | > this.Name = "Form1";
| > | > this.Text = "Form1";
| > | > this.MouseMove += new
| > | > System.Windows.Forms.MouseEventHandler(this.Form1_MouseMove);
| > | > ((System.ComponentModel.ISupportInitialize)(this.timer1)).EndInit();
| > | > this.ResumeLayout(false);
| > | >
| > | > }
| > | > #endregion
| > | >
| > | > /// <summary>
| > | > /// The main entry point for the application.
| > | > /// </summary>
| > | > [STAThread]
| > | > static void Main()
| > | > {
| > | > Application.Run(new Form1());
| > | > }
| > | >
| > | > private void Form1_MouseMove(object sender,
| > | > System.Windows.Forms.MouseEventArgs e)
| > | > {
| > | > System.Diagnostics.Debug.WriteLine("MainForm MouseMove received");
| > | > }
| > | >
| > | > private void timer1_Elapsed(object sender,
| > System.Timers.ElapsedEventArgs
| > | > e)
| > | > {
| > | > myUserControl1.BeginUpdate();
| > | > System.Diagnostics.Debug.WriteLine("BeginUpdate");
| > | > myUserControl1.DoUpdate();
| > | > myUserControl1.EndUpdate();
| > | > System.Diagnostics.Debug.WriteLine("EndUpdate");
| > | >
| > | > }
| > | > }
| > | > }
| > | >
| > | > </code>
| > | >
| > | >
| > | >
| > | >
| > |
| > |
| > |
| >
|
|
|