Loading Bitmaps without reasources?

Hello zTn!

To Load bitmaps without using a recsource with standard win32 API functions is "very simple", at first it may look diffucult, but once you know it, you know it
I make my programs with Delphi (pascal), so the following code is in pascal, translating to c++ if you want to do that, ain''t that difficult.

But here''s the code:

//Use the function loadimage, this will return a handle, that
//is an identifier, something like a pointer, for that
//bitmap from windows.

var BitmapHandle:hBitmap;
PathAndFilenameWithExtension:String;
BitmapWidth:Integer;
BitmapHeight:Integer;

//For example: PathAndFilenameWithExtension:=''Bitmap.bmp'';
// BitmapWidth:=100;
// BitmapHeight:=75;

BitmapHandle:=LoadImage(0,pchar(PathAndFilenameWithExtension),IMAGE_BITMAP,BitmapWidth,BitmapHeight,LR_LOADFROMFILE);

//Next load the bitmap into the devicecontext (if you don''t
//know what that is mail me, or see documentation on GameDev).

//I assume you have the handle of your window stored in the
//variable WindowHandle.

var DC:hDC;
BitmapDC;
WindowHandle:THandle;

//A handle from the DC (Device Context) can be retrieved with:

DC:=GetDC(WindowHandle);

//Now you need to create a DC for the bitmap.

BitmapDC:=CreateCompatibleDC(DC);

//Next select the bitmap into the BitmapDC.

SelectObject(BitmapDC,BitmapHandle);

//And blit the bitmap to the "canvas" of the window.

BitBlt(DC,XDest,YDest,BitmapWidth,BitmapHeight,BitmapDC,BitmapWidth,BitmapHeight,SRCCOPY);

//That''s it, note that this is not transparent bitmap blitting.

If you have any questions, feel free to ask,

Thijs Jellema

to_thijs@hotmail.com

Thanks!

Hey! This didn''t work either! As soon as i removed the reasource file from the build, the run fails with

"The specified image file did not contain a reasource section."

There must be a way to load the file at runtime! Anybody?
zTn


PS Working in MS Visual Studio 6

Try this:

HBITMAP hBmp = (HBITMAP)LoadImage(NULL, "image.bmp", IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE);

I think that is exactly what i am using:


//
BITMAP bm;
HBITMAP hbmBall;
HDC hdcMemory, hdcWindow;

//Load Image File
hbmBall = LoadBitmap(phInstance, "Intro.bmp");
//
if(!hbmBall)Process_Error("void zwindow::InitIntroImage", "Intro.bmp");


//Aquire Window Content & Memory space
hdcWindow = GetDC(hwnd);
hdcMemory = CreateCompatibleDC(hdcWindow);
SelectObject(hdcMemory, hbmBall);
GetObject(hbmBall, sizeof(bm), &bm);

//Draw Image
BitBlt(hdcWindow, 0, 0, bm.bmWidth, bm.bmHeight, hdcMemory, 0, 0, SRCCOPY);

//
DeleteDC(hdcMemory);
if (!ReleaseDC(hwnd, hdcWindow)) Process_Error("zDescWin::Draw() ReleaseDC() Failure");
//




Is there some setting in VC that i''m not aware of maybe?
zTn

Oh, i see it now. My bad.


thanks to both thijsjellema and Advanced Bug,
zTn