URGENT::GDI Display Mode issues(My GDI mode crashes randomly to a black screen when running)

• Question

• 

  

  0

  Sign in to vote

  hello I coded a game engine with a complete gui system.... it has a debug gdi output mode a directx 6 mode a directx 8 mode and an open gl mode... the other modes work fine for now but I have an issue where the GDI mode crashes to a black screen randomly when the app is operationg.. this happens more often on restoring from minimized or on resizing......

  please email responses to ThomasCannady@comcast.net as well as posting them here... also could you

  put "URGENT" in the email title... thanks

   

  here is the GDI code :

   

  void

   

  gdi_update(void

  )

  {

  //#ifdef FEVTRACKFPS

  // dofps();

  #

   

  //endif

   

  // Copy the backbuffer to the window

   

  // Single Threaded Version

  HDC hdcDIBSection;

  HBITMAP holdbitmap;

  hdc = GetDC(mainwin);

  hdcDIBSection = CreateCompatibleDC(hdc);

   

  if

  (gdibackbufferpage==0)

  holdbitmap = (HBITMAP)SelectObject(hdcDIBSection, (HGDIOBJ)backbufferhandle1);

   

  else

  holdbitmap = (HBITMAP)SelectObject(hdcDIBSection, (HGDIOBJ)backbufferhandle2);

   

  BitBlt(hdc, 0, 0, screenwidth, screenheight, hdcDIBSection,

  0, 0, SRCCOPY);

  ReleaseDC(mainwin, hdc);

  SelectObject(hdcDIBSection, holdbitmap);

  DeleteDC(hdcDIBSection);

   

  checkmsg();

  }

  • Moved by Rob Pan Tuesday, October 25, 2011 3:03 AM (From:Visual C++ General)

  Friday, October 21, 2011 2:11 PM