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- Previous
  - 1
    - Conversion operator not callable? I get an error message when I try to compile the code below: ======================== Error message ======================================== error C2664: 'f' : cannot convert parameter 1 from 'c<t1,t2>' to 'const c<t1,t2> &' with [ t1=char, t2=int ] and [ t1=const char, t2=int ] ===================================== Code ==================================== template< typename t1, typename t2 > struct c { c( ) { } operator c< t1 const, t2 >( ) const { return c< t1 const, t2 >( ); } }; template< typename t2 > void f( c< char const, t2 > const& ) { } int __cdecl main ( ) { c< char, int > C; f( C ); } Why is the conversion operator not used in this context? Tag: image JPEG and BMP Tag: 250357
  - 2
    - Dll Entry Point Name Hi, MSDN documentation states: "The name DllMain is a placeholder for a user-defined function. You must specify the actual name you use when you build your DLL." How do you actually accomplish that? I have not been able to find that in the VC.Net documantation. Many thanks, Aaron Fude Tag: image JPEG and BMP Tag: 250350
  - 3
    - Enabling Memory Leak Detection Hi, I am trying to enable memory leak detection based on the url below. If I use _CRTDBG_MAP_ALLOC instead of CRTDBG_MAP_ALLOC in a test program, I can see the offending line numbers and source file get printed out. However in the program that I am trying to find memory leaks, I get the same debug output regardless of whether I #define _CRTDBG_MAP_ALLOC or CRTDBG_MAP_ALLOC. And I only get one line number <dllmodul.cpp(106)> output instead of every offending (leak causing) line number. Why is that? // based on http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vsdebug/html/vxconenablingmemoryleakdetection.asp #define _CRTDBG_MAP_ALLOC #include <stdlib.h> #include <crtdbg.h> . . . _CrtDumpMemoryLeaks(); OUTPUT Detected memory leaks! Dumping objects -> {61} normal block at 0x00872680, 7 bytes long. Data: <MyExename> 43 61 70 47 65 6E 00 {56} normal block at 0x00872748, 33 bytes long. Data: < C > 00 43 00 CD CD CD CD CD CD CD CD CD CD CD CD CD {55} normal block at 0x008726E0, 40 bytes long. Data: < |L > 14 7C 4C 10 16 00 00 00 00 00 00 00 00 00 00 00 dllmodul.cpp(106) : {53} client block at 0x00872590, subtype 0, 64 bytes long. a CDynLinkLibrary object at $00872590, 64 bytes long {52} client block at 0x00872508, subtype 0, 64 bytes long. a CDynLinkLibrary object at $00872508, 64 bytes long {50} client block at 0x00874F68, subtype 0, 64 bytes long. a CDynLinkLibrary object at $00874F68, 64 bytes long Object dump complete. Thanks! Tag: image JPEG and BMP Tag: 250349
  - 4
    - Client Server using TCP/IP - which interface to use? Hi there... I want to write a small utility. It should be front- and backend running on different machines. I don't want to handle error correction or timeouts by myself. Communication is TCP/IP. How could I easyly do the communication? CSocket or something else. Thanks in advance Stefan Tag: image JPEG and BMP Tag: 250346
  - 5
    - GetDIBits is returning 0 hi, i'm geting de bits of to bitmaps into a buffer in order to compare then. the first time i call GetDIBits, it works ok, and returns the number of scanlines an correct data in the buffer. the second time, it returns 0 and does nothing in the baffer. if i change the order of the calls, the second still fails. i know that then bitmaps must not be selected on any DC, and i'm carefully with that. ¿¿any reason why GetDIBits returns 0?? Thank you. by MJM. Tag: image JPEG and BMP Tag: 250338
  - 6
    - reversing bit order Hi folks - I'm writing some code for a checksum algorithm and I need to reverse the order of bits in an unsigned char array, in 4-bit chunks (half byte, or nibble). Example.. the array contains BYTE data: 0001 0110, 0000 0010, 1000 0000 0x16, 0x02, 0x80 Each nibble gets reversed: 1000 0110, 0000 0100, 0001 0000 0x86, 0x04, 0x10 Each nibble will then be added and the results become a checksum nibble. I can do this brute force, one bit at a time, but I'm hoping someone out there will recognize a possible elegant solution. There will always be 5 bytes (40 bits, 10 nibbles) to deal with. Any ideas? Thanks. Tag: image JPEG and BMP Tag: 250334
  - 7
    - Tree control: How do I get the expand / collapse icons? I'm performing a custom draw of the items of a tree control and I need to be able to draw the expand and collapse toggle button ([+] & [-]) that appears to the left of items with children. I need to know how to get that icon, and the coordinates that the OS expects the symbol to be drawn. I can't find this information in the MSDN. Thanks (Sorry that this is the wrong category but there isn't a vc.controls newsgroup) Tag: image JPEG and BMP Tag: 250331
  - 8
    - Initializing member variables Hi, I did this test using VC .NET 7.0: #include <iostream> using namespace std; class A { public: //A () { } // Providing a default constructor makes it work int i; int GetI() { return i; } }; int main(int argc, char* argv[]) { A a; //cout << a.GetI() << endl; //This call works cout << a.i << endl; //Throws Runtime error a.i++; //Throws Runtime Error return 0; } In the lines mentioned, it throws a runtime error saying that the variable is not 'defined'. The variable is not initialized, of course, but what makes it not throw the error if: 1) the default constructor is provided, which does not actually initialize 'i'? 2) a.GetI() is called, again without initializing 'i'? TIA, SD Tag: image JPEG and BMP Tag: 250327
  - 9
    - Using WebBrowser Control, how to Navigate w/o displaying the HTML page. I built an MFC project of the SDI type, hosting a WebBrowser Control. Everything seems to behave properly. I am using the Navigate(LPCTSTR URL) to get web pages. Is it possible and if so how to perform all the functionality of the Navigate() w/o display the page? There is a method called SetVisible(false/true) but when trying to use it, it creates an exception. With and w/o regard to the above question, Is it preferred to have a host of the MDI (or top level MDI) type, as to separate between the host's GUI window and the window in which the WebBrowser Control displays a page (that is if I allow it to do that)? Thanks, David Tag: image JPEG and BMP Tag: 250301
  - 10
    - std::_MAX Replacement I'm migrating from VS6.0 to VS 2003 .Net. One of the breaking changes is that _MAX has been redefined so that std::_MAX will no longer compile. I tried changing each usage to std::max, but that won't compile either. So I went using std::max ... float a = max(b, c); which is compiling. How have other people dealt with this issue? Thanks in advance! Tag: image JPEG and BMP Tag: 250291
  - 11
    - Calling vb.net web service from visual c++ Hi. I am new to this so this may be a dumb question: I am trying to call a web service that is Written in VB.NET from my C++ dll. here is what I did: 1. Create a sample web service (with helloworld function) 2. Create an empty ATL application (it compiled) 3. Added a reference to the wsdl document of the web service to the project. 4. tried to compile it and got an error: syntax error : expecting a type specification near "HelloWorldResult" error points to this line: [id(4), helpstring("method HelloWorld")] HRESULT HelloWorld([out, retval] HelloWorldResult *); Here is the code that was generated by Soap Tool Kit when I added a reference: // TestSoapTool.idl : IDL source for TestSoapTool.dll // // This file will be processed by the MIDL tool to // produce the type library (TestSoapTool.tlb) and marshalling code. import "oaidl.idl"; import "ocidl.idl"; [ object, uuid(433144B5-225D-42D8-8E2C-875467ABE7FA), dual, helpstring("IService1SoapProxy Interface"), pointer_default(unique) ] interface IService1SoapProxy : IDispatch { [propget, id(1), helpstring("property URL")] HRESULT URL([out, retval] BSTR *pVal); [propput, id(1), helpstring("property URL")] HRESULT URL([in] BSTR newVal); [propget, id(2), helpstring("property ProxyServerAddress")] HRESULT ProxyServerAddress([out, retval] BSTR *pVal); [propput, id(2), helpstring("property ProxyServerAddress")] HRESULT ProxyServerAddress([in] BSTR newVal); [propget, id(3), helpstring("property ProxyServerPort")] HRESULT ProxyServerPort([out, retval] BSTR *pVal); [propput, id(3), helpstring("property ProxyServerPort")] HRESULT ProxyServerPort([in] BSTR newVal); [id(4), helpstring("method HelloWorld")] HRESULT HelloWorld([out, retval] HelloWorldResult *); }; [ uuid(A07EF164-8E81-41FF-9D91-BD74F3C1F67E), version(1.0), helpstring("TestSoapTool 1.0 Type Library") ] library TESTSOAPTOOLLib { importlib("stdole32.tlb"); importlib("stdole2.tlb"); [ uuid(C7AC7808-58F3-4109-B2D9-ACC22521C055), helpstring("Service1SoapProxy Class") ] coclass Service1SoapProxy { [default] interface IService1SoapProxy; }; }; Before I go any further I wanted to know if it is even doable: calling vb-based functions from c++ since all types are different. Is this a common issue? Did I do anything wrong in my steps or is there anything I did not do? Thanks for the help. Tag: image JPEG and BMP Tag: 250284
  - 12
    - Dynamically Set Tab Index Hi, Is there anyway to Dynamically Set the Tab Index of the controls in a mfc dialog? I want two fields to switch tab order under certain conditions. Thanks Marcus de Leon Tag: image JPEG and BMP Tag: 250281
  - 13
    - VC++ 6.0 or higher This is a multi-part message in MIME format. ------=_NextPart_000_000D_01C58D71.02386B80 Content-Type: text/plain; charset="koi8-r" Content-Transfer-Encoding: quoted-printable What is newest environment to build C++ applications? Microsoft VS 6.0 or something better? -- Thank you Vadim S. ------=_NextPart_000_000D_01C58D71.02386B80 Content-Type: text/html; charset="koi8-r" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=3DContent-Type content=3D"text/html; charset=3Dkoi8-r"> <META content=3D"MSHTML 6.00.2600.0" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=3D#ffffff> <DIV><FONT face=3DArial size=3D2>What is newest environment to build C++ = applications?</FONT></DIV> <DIV>Microsoft VS 6.0 or something better?</DIV> <DIV> </DIV> <DIV><FONT face=3DArial size=3D2>--</FONT></DIV> <DIV>Thank you</DIV> <DIV>Vadim S.</DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV></BODY></HTML> ------=_NextPart_000_000D_01C58D71.02386B80-- Tag: image JPEG and BMP Tag: 250278
  - 14
    - nmake for Windows 2003 x64 Hi Where can I find nmake for Windows 2003 x64? nmake is needed for some Perl development I'm doing, particularly to install some plug-in packages from CPAN. Thanks tl Tag: image JPEG and BMP Tag: 250277
  - 15
    - REQ: Screensaver source code Hi, Could anyone show me a site that has screensaver source code? Thanks Jack Tag: image JPEG and BMP Tag: 250273
  - 16
    - unicode and debuging Hey, anybody can advice how to debug unicode, this is real pain in the ... Regular logging also doesn't work... When debuging I'm getting only first character of the srtring... thanks Tag: image JPEG and BMP Tag: 250272
  - 17
    - J-Integra for COM (Java COM interoperability) Looking for Java/COM interoperability tools? Thousands of companies world-wide are using J-Integra for COM for interoperability between Java and Microsoft COM applications. J-Integra for COM is a pure Java implementation of the DCOM protocol, making it several times faster than Web Services. J-Integra for COM Features: * Access J2EE components from VB, C++, ASPs, etc... * Access COM components from EJBs, Servlets, JSPs, Applets, etc... * Pure Java implementation, 100% managed code (no native code required) * Bi-directional: "Java to COM" and "COM to Java" * One-sided deployment (no touch on Microsoft client/server side) * Supports any JVM running on any platform (Windows, Unix, Linux, etc...) * Optional high-speed native mode for Windows platforms * Allows Java clients to subscribe to COM events using standard Java semantics, and COM clients to subscribe to Java events using standard COM semantics * Supports both early binding and late binding access to Java/COM components * Supports the full range of COM Oleautomation types For a free evaluation, visit our website at http://j-integra.intrinsyc.com/ Regards, Shane Sauer Intrinsyc Software International, Inc. J-Integra Interoperability Solutions http://j-integra.intrinsyc.com/ When Web Services are not enough Tag: image JPEG and BMP Tag: 250268
  - 18
    - IDL Help Newbie question: What is the syntax to declare a string constant in an IDL? I'm trying to compile a type lib that I can reference and use from VB project. If I use 'string', I get an error: "syntax error : expecting a type specification or a storage specifer or a type qualifier near "string" If I use 'BSTR', I get an error: error C2440: 'initializing' : cannot convert from 'char [24]' to 'unsigned short *const ' If I use 'wchar_t *' I can compile it, but obviously I cannot use it in VB. TIA. Tag: image JPEG and BMP Tag: 250264
  - 19
    - mscorlib help I am using VC++ and am doing something where I need this: #using <mscorlib.dll>, however, I am told at compile time that I need to compile with /clr. When I used /clr I was told that I cannot use it with /RTC. I can modify /RTC but cannot seem to get rid of it. How can I resolve this problem? Tag: image JPEG and BMP Tag: 250263
  - 20
    - Draw a rect .But the frame change. The rect is disappear. What happen? My program code is following. Please help me. Thanx. John Wild #include <windows.h> #include "resource.h" HINSTANCE hInst; static TCHAR szAppName[]="MyApp"; LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM); int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPreInstance,PSTR szCmdLine,int iCmdShow) { HWND hWnd; MSG msg; WNDCLASSEX wndclass; wndclass.cbSize=sizeof(wndclass); wndclass.style=CS_HREDRAW|CS_VREDRAW; wndclass.lpfnWndProc=WndProc; wndclass.cbClsExtra=0; wndclass.cbWndExtra=0; wndclass.hInstance=hInstance; wndclass.hIcon=LoadIcon(NULL,IDI_APPLICATION); wndclass.hCursor=LoadCursor(NULL,IDC_ARROW); wndclass.hbrBackground=(HBRUSH)(COLOR_WINDOW+1); wndclass.lpszMenuName=MAKEINTRESOURCE(IDR_MENU1); wndclass.lpszClassName=szAppName; wndclass.hIconSm=LoadIcon(NULL,IDI_APPLICATION); RegisterClassEx(&wndclass); hInst=hInstance; hWnd=CreateWindow(szAppName,"Rect Test Function", WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT, CW_USEDEFAULT,CW_USEDEFAULT,NULL,NULL,hInstance, NULL); ShowWindow(hWnd,iCmdShow); UpdateWindow(hWnd); while(GetMessage(&msg,NULL,0,0)) { TranslateMessage(&msg); DispatchMessage(&msg); } } LRESULT CALLBACK WndProc(HWND hWnd,UINT iMsg,WPARAM wParam,LPARAM lParam) { HDC hDC; RECT rect; HWND hChild,hPopup,hControl; rect.top=100; rect.left=100; rect.bottom=200; rect.right=200; switch(iMsg) { //°T¸¹±M¥Î case WM_CREATE: return 0; case WM_PAINT: PAINTSTRUCT ps; hDC=BeginPaint(hWnd,&ps); EndPaint(hWnd,&ps); return 0; case WM_COMMAND: //¿ï³æ±M¥Îªº switch(LOWORD(wParam)) { case IDM_Demo: MessageBox(hWnd,"Rect Test Function" ,"IDM_Command",MB_OK); return 0; case IDM_Child: hChild=CreateWindow(szAppName,"Rect Test Function", WS_CHILD|WS_CAPTION|WS_VISIBLE|WS_SIZEBOX|WS_SYSMENU, 30,30,150,100,hWnd,(HMENU)101,hInst,NULL); SetActiveWindow(hChild); return 0; case IDM_Popup: hPopup=CreateWindow(szAppName, "Rect Test Function",WS_POPUP| WS_VISIBLE|WS_CAPTION|WS_SYSMENU, 30,30,300,100,hWnd,NULL,hInst, NULL); SetActiveWindow(hPopup); return 0; case IDM_Rect: hDC=GetDC(hWnd); InflateRect(&rect,20,20); FrameRect(hDC,&rect,(HBRUSH) GetStockObject(BLACK_BRUSH)); ReleaseDC(hWnd,hDC); return 0; case IDM_Exit: DestroyWindow(hWnd); return 0; } case WM_DESTROY: PostQuitMessage(0); return 0; } return DefWindowProc(hWnd,iMsg,wParam,lParam); } Tag: image JPEG and BMP Tag: 250261
  - 21
    - Lost on anything pertaining to MessageBox I have the following 2 files: File1.cpp Line 100: MessageBox("ABC"); Line 101: MessageBox(NULL,"ABC",NULL,MB_OK); File2.cpp Line 120: MessageBox("ABC"); Line 121: MessageBox(NULL,"ABC",NULL,MB_OK); When compiling, I am getting two error messages: File1.cpp(100): error C2660: 'CWnd::MessageBoxA' : function does not take 4 arguments File2.cpp(121): error C2660: 'MessageBoxA' : function does not take 1 arguments So it does not like one MessageBox signature in one file and likes the other one While in the other file it is the reverse! #include statement in both files are identical. Couldn't find a clear decription of the usage of MessageBox. I guess it must be related to the base classes of the involved derived classes in each file: class File1_X : public Cdocument class File2_X : public ChtmlView Anybody saw a good & COMPLETE definition of MessageBox? I am simply exhausted from this MessageBoxA stuff, let alone the above wierd behavior. Thanks, David Tag: image JPEG and BMP Tag: 250240
  - 22
    - Release vs Debug (Memory leak...Object Dump) I found out that when I build a project in Debug mode, memory leak...object dump occurs. But when I build the project in Release mode no memory leak...object dump occurs. So my question is that whether the release build have memory leak??? Tag: image JPEG and BMP Tag: 250227
  - 23
    - VS2005 doesn't like its own suggestions I typed std:: A pull down list box poped up with a list of all selections available as expected. Among them is "string" as expected. I choose "string". The compiler then complains that "string is not a member of std"... Any idea about such a puzzle? Thanks, David Tag: image JPEG and BMP Tag: 250226
  - 24
    - Runtime assert -> DBGDEL.CPP Hello , I am getting a Debug Assertion "Error in line 47 at dbgdel.cpp" , though the code I am running has been compiled in release build . To wipe off the doubt that it can be a debug,release build mismatch, I have rebuild all the code in the Release build , but still I am getting this problem . Any help would be appreciated . Thanks , Sujay -- Sujay Ghosh Bangalore, INDIA Tag: image JPEG and BMP Tag: 250219
  - 25
    - VC .NET 2003 - const (public) and non-const (protected) overloaded funcs do not compile Can anybody tell me why this fails to compile with the following error?? Compiling... Test.cpp d:\Sample_Code\Test\Test\Test.cpp(24) : error C2248: 'Foo::Get' : cannot access protected member declared in class 'Foo' d:\Sample_Code\Test\Test\Test.cpp(14) : see declaration of 'Foo::Get' d:\Sample_Code\Test\Test\Test.cpp(7) : see declaration of 'Foo' class Foo { public: Foo() : m_A( 0 ) {} const int &Get() const { return m_A; } protected: int &Get() { return m_A; } private: int m_A; }; int _tmain(int argc, _TCHAR* argv[]) { Foo f; const int &n = f.Get(); return 0; } Tag: image JPEG and BMP Tag: 250218
- Next
  - 1
    - ANNC: Reliable Software releases their own C++ Windows Library Seattle, WA -- Seattle-based Reliable Software=AE announces the release their Windows Library into the public domain. Reliable Software Windows Library, RSWL, is the foundation for their compact, feature rich applications including the flagship product, Code Co-op. The use of RSWL in both individual and commercial products is free and not restricted to public domain projects. RSWL provides a thin, easy to understand, object-oriented layer encapsulating the Windows API. Its architecture is based on the ideas described in the book "C++ in Action, Industrial Strength Programming Techniques" (Addison-Wesley 2001). Besides including the encapsulation of basic Windows infrastructure, like handles, message loops, Window classes and instances, dialog boxes, and Windows controls; it also provides sub-libraries for many of the Windows subsystems. There is a compact graphics library built around GDI, a file library that includes memory-mapped files, a thread library with synchronization primitives, a network library including FTP, BITS, SMTP and POP3, and many others. More information can be found online at http://www.relisoft.com/rswl.html Reliable Software uses a novel mechanism for the distribution of RSWL sources and updates using a free, e-mail based, version of its own distributed version control system, Code Co-op. Reliable Software's contributions to the development community go beyond Code Co-op. On their website, they provide extensive information for developers, including tutorials, discussion forums, and an on-line book. The founder of Reliable Software is the author of "C++ in Action" and a regular contributor to various trade magazines. Tag: image JPEG and BMP Tag: 250216
  - 2
    - DSWebCamCap I have bought the book "Programming Microsoft DirectShow for digital video and television" and I'm trying to compile and link the DSWebCamCap example for my web cam. However, it fails trying to link - error: it can't find C:/Program/microsoft.obj. What is microsoft.obj, how is it created, why, and how can I make sure it is made so that I can compile, link and run the DSWebCamCap example? Tag: image JPEG and BMP Tag: 250213
  - 3
    - Get friendly name of struct Is there any way to get the value name of an enumeration as a string? i.e. typedef enum EventID { ServiceStart = 100, ServiceStop = 101, }; char* szName = Foo(ServiceStop); //Then szName would equal "ServiceStop\0" Bob Tag: image JPEG and BMP Tag: 250206
  - 4
    - Calling .Net web services from Visual C++ (Soap Tool Kit) Hi. I am new to this so this may be a dumb question: I am trying to call a web service that is Written in VB.NET from my C++ dll. here is what I did: 1. Create a sample web service (with helloworld function) 2. Create an empty ATL application (it compiled) 3. Added a reference to the wsdl document of the web service to the project. 4. tried to compile it and got an error: syntax error : expecting a type specification near "HelloWorldResult" error points to this line: [id(4), helpstring("method HelloWorld")] HRESULT HelloWorld([out, retval] HelloWorldResult *); Here is the code that was generated by Soap Tool Kit when I added a reference: // TestSoapTool.idl : IDL source for TestSoapTool.dll // // This file will be processed by the MIDL tool to // produce the type library (TestSoapTool.tlb) and marshalling code. import "oaidl.idl"; import "ocidl.idl"; [ object, uuid(433144B5-225D-42D8-8E2C-875467ABE7FA), dual, helpstring("IService1SoapProxy Interface"), pointer_default(unique) ] interface IService1SoapProxy : IDispatch { [propget, id(1), helpstring("property URL")] HRESULT URL([out, retval] BSTR *pVal); [propput, id(1), helpstring("property URL")] HRESULT URL([in] BSTR newVal); [propget, id(2), helpstring("property ProxyServerAddress")] HRESULT ProxyServerAddress([out, retval] BSTR *pVal); [propput, id(2), helpstring("property ProxyServerAddress")] HRESULT ProxyServerAddress([in] BSTR newVal); [propget, id(3), helpstring("property ProxyServerPort")] HRESULT ProxyServerPort([out, retval] BSTR *pVal); [propput, id(3), helpstring("property ProxyServerPort")] HRESULT ProxyServerPort([in] BSTR newVal); [id(4), helpstring("method HelloWorld")] HRESULT HelloWorld([out, retval] HelloWorldResult *); }; [ uuid(A07EF164-8E81-41FF-9D91-BD74F3C1F67E), version(1.0), helpstring("TestSoapTool 1.0 Type Library") ] library TESTSOAPTOOLLib { importlib("stdole32.tlb"); importlib("stdole2.tlb"); [ uuid(C7AC7808-58F3-4109-B2D9-ACC22521C055), helpstring("Service1SoapProxy Class") ] coclass Service1SoapProxy { [default] interface IService1SoapProxy; }; }; Before I go any further I wanted to know if it is even doable: calling vb-based functions from c++ since all types are different. Is this a common issue? Did I do anything wrong in my steps or is there anything I did not do? Thanks for the help. Tag: image JPEG and BMP Tag: 250200
  - 5
    - using enums in array references I tested the following lines of code, and they work, but I was wondering if usage of enums like this is frowned upon. I don't really ever see enums used like this, and I was wondering why. enum index {first, second, third}; int i[3]; i[first] = 1; i[second] = 2; i[third] = 3; Thanks, Tag: image JPEG and BMP Tag: 250198
  - 6
    - Use IE as help window I would like to use IE (or registered browser) to display some HTML help in my application. In addition I would like to continue to use the same instance for subsequent help queries (provided it is still open). Also, I want to be able to make it an always on top window so that giving focus to the application does not obscure it. I've got the easy part opening IE using ShellExecute(). Can I do what I am suggesting? I'm willing to change the method of launching if necessary. Thanks, Drew Tag: image JPEG and BMP Tag: 250196
  - 7
    - space or tab in #define I find there are some statements like "# define PI 3.14159" in our code. Please note that there is a space between "#" and "define". I have tried space and tab in VC project, and find they work well. But I wonder whether it is standard usage in standard C, especially in make of cygwin. Thank you! Best regards, GanJinhua Tag: image JPEG and BMP Tag: 250188
  - 8
    - To Display a JPEG Image Can I use the Bitmap Functions like CreateBitmap, Bitblt to display a JPEG Image? Tag: image JPEG and BMP Tag: 250187
  - 9
    - diff betn SetLocalTime() & SetSystemTime() ? What is the difference between SetLocalTime() & SetSystemTime(). Regards, KC. Tag: image JPEG and BMP Tag: 250181
  - 10
    - difference between AfxOleInit() & CoUninitialize() ? Hi to All, My Questions : 1. What is the difference between AfxOleInit() & CoUninitialize() in case of shell object? 2. In MFC appln, When i use CoInitialize(), then is it neccessary to UnInitialize it ? and if yes,where do i UnInitialize() it? waiting eagerly for replay. KC. Tag: image JPEG and BMP Tag: 250178
  - 11
    - I cant see the menu. Please help me? My program code is following. Could u tell me what happen about menu? Thanx john wild #include <windows.h> #include "resource.h" HINSTANCE hInst; LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM); int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,PSTR szCmdLine,int iCmdShow) { static TCHAR szAppName[]="My App"; HWND hWnd; MSG msg; WNDCLASSEX wndclass; //©w¸qµøµ¡Ãþ§O(WINDOW CLASS) wndclass.cbSize=sizeof(wndclass); wndclass.style=CS_HREDRAW|CS_VREDRAW; wndclass.lpfnWndProc=WndProc; wndclass.cbClsExtra=0; wndclass.cbWndExtra=0; wndclass.hInstance=hInstance; wndclass.hIcon=LoadIcon(NULL,IDI_APPLICATION); wndclass.hCursor=LoadCursor(NULL,IDC_ARROW); wndclass.hbrBackground=(HBRUSH)(COLOR_WINDOW+1); wndclass.lpszMenuName="IDR_MENU1"; wndclass.lpszClassName=szAppName; wndclass.hIconSm=LoadIcon(NULL,IDI_APPLICATION); RegisterClassEx(&wndclass); hWnd=CreateWindow(szAppName,"¨ç¦¡¥Ü½d",WS_OVERLAPPEDWINDOW, CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT, CW_USEDEFAULT,NULL,NULL,hInstance,NULL); ShowWindow(hWnd,iCmdShow); UpdateWindow(hWnd); while(GetMessage(&msg,NULL,0,0)) { TranslateMessage(&msg); DispatchMessage(&msg); } return msg.wParam; } LRESULT CALLBACK WndProc(HWND hWnd,UINT iMsg,WPARAM wParam,LPARAM lParam) { HDC hDC; switch (iMsg) { case WM_CREATE: return 0; case WM_PAINT: { PAINTSTRUCT ps; hDC=BeginPaint(hWnd,&ps); EndPaint(hWnd,&ps); return 0; } case WM_COMMAND: { switch(LOWORD(wParam)) case IDM_Demo: MessageBox(hWnd,"Demo", "idm_Command",MB_OK); return 0; case IDM_Exit: DestroyWindow(hWnd); return 0; break; } case WM_DESTROY: PostQuitMessage(0); return 0; } /*---End of switch---*/ return DefWindowProc(hWnd,iMsg,wParam,lParam); } /*---End of Program---*/ Tag: image JPEG and BMP Tag: 250171
  - 12
    - simple dll question How can you register a VC++6 dll which won't register with regserv32? This project was made with MFC App Wizard(dll). The project works fine when it's placed in Windows\System32\ for Visual Basic 6, but I need to place it somewhere else. Thank you. -- Rick Tag: image JPEG and BMP Tag: 250165
  - 13
    - VC 8 crash (fatal internal error) when using nested exceptions Greetings, While migrating some old code (5+ years) to VC 8, Beta 2 (for targeting AMD64), I encountered an internal compiler error when building release builds. This code builds fine in both VC 6 & 7.1 when targeting x86 (I think it even built fine in VC 4.2 if my memory squeeks correctly). The code in question has nested try/except blocks, for example: " __try { //OS Call } __except( EXCEPTION_EXECUTE_HANDLER ) { __try { //OS_call(different parameters) } __except( EXCEPTION_EXECUTE_HANDLER ) { //review parameters, cleanup, unwind } } " This crash was easily worked around by moving the nested exception block to its own function. Here are the juicy details from a cross build: " Finished searching libraries Finished pass 1 Generating code xxxx.cpp(1109) : fatal error C1001: An internal error has occurred in the compiler. (compiler file 'f:\beta2\vctools\compiler\utc\src\P2\main.c[0x10B080F6:0x0000004F]', line 183) To work around this problem, try simplifying or changing the program near the locations listed above. Please choose the Technical Support command on the Visual C++ Help menu, or open the Technical Support help file for more information LINK : fatal error LNK1000: Internal error during IMAGE::BuildImage Version 8.00.50215.44 ExceptionCode = C0000005 ExceptionFlags = 00000000 ExceptionAddress = 10B080F6 (10B00000) "D:\msvc80\VC\BIN\x86_amd64\c2.dll" NumberParameters = 00000002 ExceptionInformation[ 0] = 00000000 ExceptionInformation[ 1] = 0000004F CONTEXT: Eax = 00000000 Esp = 0012EDCC Ebx = 00000000 Ebp = 0012EDF8 Ecx = 00000000 Esi = 00000000 Edx = 073E4C00 Edi = 00000000 Eip = 10B080F6 EFlags = 00010202 SegCs = 00000023 SegDs = 0000002B SegSs = 0000002B SegEs = 0000002B SegFs = 00000053 SegGs = 0000002B Dr0 = 00000000 Dr3 = 00000000 Dr1 = 00000000 Dr6 = 00000000 Dr2 = 00000000 Dr7 = 00000000 " Here's the same from the native compiler (depending on your preference): " xxxxx.cpp(1109) : fatal error C1001: An internal error has occurred in the compiler. (compiler file 'f:\beta2\vctools\compiler\utc\src\P2\main.c[0x0000000010C4B254:0x0000000000000078]', line 183) To work around this problem, try simplifying or changing the program near the locations listed above. Please choose the Technical Support command on the Visual C++ Help menu, or open the Technical Support help file for more information LINK : fatal error LNK1000: Internal error during IMAGE::BuildImage Version 8.00.50215.44 ExceptionCode = C0000005 ExceptionFlags = 00000000 ExceptionAddress = 0000000010C4B254 (0000000010C40000) "D:\msvc80\VC\BIN\amd64\c2.dll" NumberParameters = 00000002 ExceptionInformation[ 0] = 0000000000000000 ExceptionInformation[ 1] = 0000000000000078 CONTEXT: Rax = 0000000000000000 R8 = 00000000FFFE94F2 Rbx = 0000000007210000 R9 = 0000000000000000 Rcx = 0000000000000000 R10 = 726464416D654D74 Rdx = 0000000000000000 R11 = 0000000000000D4C Rsp = 000000000023E1B0 R12 = 0000000007245960 Rbp = 0000000007248106 E13 = 00000000072481C8 Rsi = 0000000006871900 R14 = 0000000000000000 Rdi = 00000000071FBBE8 R15 = FFFFFFFFFFFFFFFF Rip = 0000000010C4B254 EFlags = 0000000000010202 SegCs = 0000000000000033 SegDs = 000000000000002B SegSs = 000000000000002B SegEs = 000000000000002B SegFs = 0000000000000053 SegGs = 000000000000002B Dr0 = 0000000000000000 Dr3 = 0000000000000000 Dr1 = 0000000000000000 Dr6 = 0000000000000000 Dr2 = 0000000000000000 Dr7 = 0000000000000000 " It would be nice if this was fixed in a future release of this compiler. Though busy, I may be able to assist you with additional data, though I hope that this will be easy for you to reproduce and fix (or may have already fixed but not yet released). Thanks! -- Jeremiah National Instruments -- http://www.ni.com "stack smasher" djajadi tribute. Tag: image JPEG and BMP Tag: 250164
  - 14
    - question about the processes created in VC Hi, I am new to the windows platform and working in VC++ on WIN-2000 platform. I have a process P1. P1 has to create another process P2 ( I'm using CreateProcess API for the same). Now if some one kills P2 or P2 exits gracefuly, is there any any for P1 to know that P2 has exited. Similarly if P1 exits then is there any mechanism so that P2 can know that P1 has exited. Pls solve my problem Thanks in advance Vidyut Gupta Tag: image JPEG and BMP Tag: 250156
  - 15
    - Why map work like this? I'm using VC++ 6.0, I just started to learn container and iterator, As I found a problem about container:map like below: map<int, int> intmap; for (int i = 0; i < 10; i++) { intmap[i] = i+1; } intmap.erase(2); map<int, int>::iterator it; if ( (it = intmap.find(2)) != intmap.end()) { cout << intmap[2] ; } the result is: 0 I had thought the key: 2 should have been erased, why it is still in and just change the coresponding value to 0? Thank you! Li Hang Tag: image JPEG and BMP Tag: 250152
  - 16
    - While using realloc, what if the number of bytes are not available ?? Hi all, What will happen if we have malloc 'ed some memory and reallocating the memory at runtime.. what will happen if there is not enf space for the new allocation ?? I know it will return the error but what will happen to the previously allocated memory ?? --jigar Tag: image JPEG and BMP Tag: 250124
  - 17
    - what will be status of file descriptor ?? What will be the status of file descriptor if we, 1. open a file in parent process.. 2. fork() a process and use the file in the child. 3. close the file in the child. 4. again to use the file descriptor in the parent process. --jigar Tag: image JPEG and BMP Tag: 250121
  - 18
    - Whats the difference between strcpy and memcpy ?? Hi all, what is the difference between strcpy and memcpy ??? Mean why does memcpy takes third parameters as no of bytes to be copied ?? why does strcpy not take it ??? --jigar Tag: image JPEG and BMP Tag: 250113
  - 19
    - What happens if memory allocated by new and freed up by function free() ?? Hi all, I have been asked a question somewhere that what will happen if you allocate the memory using new operator and de-allocating that memory using free ?? Will it give exception or just un-defined behavior.. ??? --jigar Tag: image JPEG and BMP Tag: 250112
  - 20
    - "Curiouser and curiouser.", said Alice. "WTF?!", said Joe. The following SDK program works fine on my Win2k PC. I start trying it out on a WinXP machine: Things are looking bad now: it will only run in debug build. In release build it just exits (no crash, just doesn't start properly). I track it down to the part marked with "THE REALLY IMPORTANT BIT IS HERE" (see psuedo code, below). (I couldn't find the point of failure, because my attempt at logging each point just caused everything to work again (hmmm...)). WITHOUT that code block, the program just exists prematurely. WITH that code block, the program runs fine (note that the block is AFTER the message pump). If I move the code block in front of the message pump, it still works. IF I remove the volatile keyword, the program stops working again. If I remove huge chunks of other code (not shown), it makes no difference. Is it a thread issue with directX being initialised in a separate thread from WinMain? If I don't create the thread, I get the same behaviour as described above. I'm using the multithreaded libs. I could leave in the volatile loop, but I don't like not knowing why. If I build with optimisations turned off, I get the same behaviour. In fact, just tested it with for(x= 0; x < 1; x++){}; removed (leaving only the volatile declaration - unreferrenced variable), and with optimisations turned off, it had the same effect (program worked). With optimisation on, it looks like it's been optimised away (program stops working). So, what the frig is going on? Any ideas? pseudo code: WinMain(){ CreateEvent to check for previous existance. Read and Write a couple of DWORDS to the registry Register a Window Class hwndApp= CreateWindow _beginthreadex (myThreadProc) check current user's locale. Add a tray icon // normal message loop stuff MSG msg; ZeroMemory(msg) while(msg != WM_QUIT){ PeekMessage() TranslageMessage() DispatchMessage() } // THE REALLY IMPORTANT BIT IS HERE. { volatile int x; for(x= 0; x < 1; x++){}; } } myThreadProc(){ set up directx. etc. } Tag: image JPEG and BMP Tag: 250108
  - 21
    - Using MSHTML, how to get a parsed tree of an HTML source file? I am using VSC++2005. It is an MFC project, hosting MSHTML. The documents I read say that MSHTML can parse HTML documents but I could not find info about the format of the parsed tree and if it can be accessible to the hosting program. If there another HTML parser, especially if it can be incorporated into my program, that can produce an accessible parsed tree, that will be interesting too. Thanks, David Tag: image JPEG and BMP Tag: 250091
  - 22
    - problem making background of static text transparent Hi, I wrote my own Splash class and in this class, i have a place for displaying messages at the bottom on my window. To display messages, i've created a static text window, thanks to CreateWindowEx. I've overloaded my WndProc with my own window procedure but i still have some problem to make my text with transparent background. I suppose 2 ways exists : - creating a brush of my text window area and using it before to write new text message - to make my text tranparent using setBkMode here is my code from my WndProc: ... case WM_PAINT : HDC hdc; // declare a handle to the device context hdc = GetDC(hWnd); // hWnd is the handle of my Text box created with CreateWindowEx SetBkMode(hdc, TRANSPARENT); // set transparency SetTextColor(hdc, RGB(0,0,0)); TextOut(hdc, 0, 0,MyMessage, strlen(MyMessage)); ReleaseDC(hWnd, hdc); case WM_ERASEBKGND : return true; ... unfortunately, when i display my first message, everything is ok, but problem happens after (during displaying of my second message)... it's written on the first one, so it becomes unreadable... I tried to make my first message disappears but except to create brush from initial state of my hWnd, i don't see how to solve this issue. Moreover, i have some problem to create a brush from rectangle of my textbox and to use it after. Could someone help me to solve my transparent problem ? thanks a lot, Maileen Tag: image JPEG and BMP Tag: 250080
  - 23
    - Dualprocessor support Hi, I just finished work on my current project - but one thing remains: multiprocessor support. My project consists of a vb.net executable (just for gui etc.)that does several callings on a specific C++ Dll. Now, the DLL creates a new thread, that consumes a lot of cpu time. If there is multiprocessor on the local machine, I'd like this thread to run on a specific CPU (to increase speed) - but I have several questions about this: - Is there any code changement necessary? e.g. Does Windows automatically place my thread on one cpu if it gets under heavy load? - How can I detect the numbers of CPUs present (in C++ or .net)? - Would it make sense to use e.g. the intel compiler 9 for this? Thanks for any help/hints, Peter Tag: image JPEG and BMP Tag: 250073
  - 24
    - VirtualAlloc I am new to using VirtualAlloc and was wondering if someone could tell me what I am doing wrong. I get a "First-chance exception in XXXX.exe: 0xC0000005: Access Violation." struct _WndProcThunk { DWORD m_mov; //32bits DWORD m_this; //32bits BYTE m_jmp; //8 bits DWORD m_relproc; //32bits 13 bytes? }; class CWndProcThunk { public: CWndProcThunk() { thunk = (_WndProcThunk *)VirtualAlloc(NULL,13,MEM_RESERVE | MEM_COMMIT, PAGE_EXECUTE_READWRITE ); } _WndProcThunk *thunk; void Init(WNDPROC proc, void* pThis) { thunk->m_mov = 0x042444C7; //C7 44 24 0C thunk->m_this = (DWORD)pThis; thunk->m_jmp = 0xe9; thunk.m_relproc = (int)proc - ((int)this+sizeof(_WndProcThunk)); FlushInstructionCache(GetCurrentProcess(), thunk, 13); } }; WNDPROC pProc = (WNDPROC)&(pThis->m_thunk.thunk); ::SetWindowLong(hwnd, GWL_WNDPROC, (LONG)pProc); Tag: image JPEG and BMP Tag: 250071
  - 25
    - static WindowProc static LRESULT CALLBACK WindowProc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam) { 1. Do I have to worry about hwnd,msg,wparam, ect changing while my thread is in here? } 2 Why doesn't microsoft make it to were you can use member functions? Tag: image JPEG and BMP Tag: 250056

Hi,

i've created a JPEG image which is 300 x 50. this image contains 6
images of 50 x 50.

i would like to know how can i tell to my program to use image 1 (from
pixel 0 to 49) at one place and to tell again to use image 3 (from pixel
99 to 149) to another place ?

or does it work only with BMP image ?
how to do it without using MFC ?

thanks a lot,
Maileen

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Re: image JPEG and BMP by hughgray

hughgray
Fri Jul 22 13:20:55 CDT 2005

Maileen wrote:
> Hi,
>
> i've created a JPEG image which is 300 x 50. this image contains 6
> images of 50 x 50.
>
> i would like to know how can i tell to my program to use image 1 (from
> pixel 0 to 49) at one place and to tell again to use image 3 (from pixel
> 99 to 149) to another place ?
>
> or does it work only with BMP image ?
> how to do it without using MFC ?
>
> thanks a lot,
> Maileen

Load the image into a CDC, which you should store, and then use BitBlt
to draw each individual image area whenever you need to.

Regards,

Hugh

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Re: image JPEG and BMP by hughgray

hughgray
Fri Jul 22 13:26:36 CDT 2005

hughgray@hotmail.co.uk wrote:
> Maileen wrote:
> > Hi,
> >
> > i've created a JPEG image which is 300 x 50. this image contains 6
> > images of 50 x 50.
> >
> > i would like to know how can i tell to my program to use image 1 (from
> > pixel 0 to 49) at one place and to tell again to use image 3 (from pixel
> > 99 to 149) to another place ?
> >
> > or does it work only with BMP image ?
> > how to do it without using MFC ?
> >
> > thanks a lot,
> > Maileen
>
> Load the image into a CDC, which you should store, and then use BitBlt
> to draw each individual image area whenever you need to.
>
> Regards,
>
> Hugh

Sorry I totally missed the part about non-mfc. You can still use the
Win32 version of BitBlt however.

Hugh

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