Thread: Not loading bmp ?

(Mingw - WinXP)
I've been having trouble with this for awhile, it seems my program just refuses to load this .bmp file. I'm not sure if its a bad resource or bad code...

Can anyone see why this doesnt load? (This is mostly the forgers tutorial with some adjustments.

Code:

//Resource.rc
IDB_BALL                BITMAP  DISCARDABLE     "C:\\ball.bmp"

Resource.rc compiled into Resource.o sucessfully.

Code:

//Rpg.cpp
//Message loop, only part dealing with the bmp.

// Included elsewhere #define IDB_BALL 1

 switch(msg) {

  case WM_CLOSE:
   DestroyWindow(hwnd);
   break;

  case WM_DESTROY:
   DeleteObject(ScreenDisplay_Object);
   PostQuitMessage(0);
   break;

  case WM_CREATE:
   ScreenDisplay_Object = LoadBitmap(GetModuleHandle(NULL), MAKEINTRESOURCE(IDB_BALL));
   if(ScreenDisplay_Object == NULL)
    MessageBox(hwnd, "Could not load object!", "Error", MB_OK | MB_ICONEXCLAMATION);
   break;

  case WM_PAINT: {
   BITMAP bm;
   PAINTSTRUCT ps;

   HDC hdc = BeginPaint(hwnd, &ps); // 31

   HDC hdcMem = CreateCompatibleDC(hdc);
   HBITMAP hbmOld = (HBITMAP)SelectObject(hdcMem, ScreenDisplay_Object); //34

   GetObject(ScreenDisplay_Object, sizeof(bm), &bm);

   BitBlt(hdc, 0, 0, bm.bmWidth, bm.bmHeight, hdcMem, 0, 0, SRCCOPY);

   SelectObject(hdcMem, hbmOld);
   DeleteDC(hdcMem);
 
   EndPaint(hwnd, &ps);
   }
   break;

  default:
   return DefWindowProc(hwnd, msg, wParam, lParam);
 }

Rpg.cpp compiled into Rpg.o sucessfully

Code:

$ g++ -o C:/Rpg.exe C:\\Rpg.o C:\\Resource.o -mwindows

Mingw compiles sucessfully, nothing goes wrong, but the bmp just doesnt load. Does anyone see why? >.>

No, it doesnt exit, it just bring up an error window (As it should) stating the bitmap was not loaded.

Wasnt sure if it was a resource error or a code error, so I generalized it to being a C++ error hehe.

Is there a getlasterror? I'm not sure, but 1 seems like a strange resource id.

I'm not sure how to check for the last error -,-.

I changed the resource ID just to be sure (1 to 101). It still was unsucessful.

Originally Posted by Blackroot

I'm not sure how to check for the last error -,-.

It's a function. As simple as DWORD GetLastError (void). However, if you want something more meaningful than a number you'd have to pass that value to FormatMessage, which is not as simple.
http://msdn.microsoft.com/library/de...matmessage.asp

Lol! Good call swoopy, that was my problem, I didint realise you needed to define (Or could define) an object in the .rc file. Thanks .