Loading a Bitmap into a DC
Author
Even though I already know a lot of DirectX, I still can''t quite get DirectDraw to run in a window. So I''ve decided to broaden my skills and learn MFC. My goal is just to make a simple windowed game anyways, so using DirectX isn''t really important. So here is my question - How do I load *.bmp files into a device context so I can draw sprites on my window?
You can visit my web page and download the BitBlt demo I have there. I created this to help a friend learn to use BitBlt. I don''t remember exactly what the program does, but the zip file contains a bitmap and the program uses BitBlt so I''m guessing that it will answere your question.
Here is a simple way of loading a bitmap from a ".rc" file.
HDC DC, MemDC;
HWND hwnd;
HBITMAP hBitmap;
HINSTANCE hInst;
hBitmap = LoadBitmap(hInst, "MY_BITMAP");
DC = GetDC(hwnd);
MemDC = CreateCompatibleDC(DC);
SelectObject(MemDC, hTileBitmap);
BitBlt(DC, 0, 0, 128, 128, MemDC, 0, 0, SRCCOPY);
DeleteDC(MemDC);
ReleaseDC(hwnd, DC);
//Put this in the reasource file
MY_BITMAP BITMAP "something.bmp"
Edited by - The_C_Guy on July 19, 2000 5:13:14 PM
HDC DC, MemDC;
HWND hwnd;
HBITMAP hBitmap;
HINSTANCE hInst;
hBitmap = LoadBitmap(hInst, "MY_BITMAP");
DC = GetDC(hwnd);
MemDC = CreateCompatibleDC(DC);
SelectObject(MemDC, hTileBitmap);
BitBlt(DC, 0, 0, 128, 128, MemDC, 0, 0, SRCCOPY);
DeleteDC(MemDC);
ReleaseDC(hwnd, DC);
//Put this in the reasource file
MY_BITMAP BITMAP "something.bmp"
Edited by - The_C_Guy on July 19, 2000 5:13:14 PM
Use LoadImage() if you don''t want to read the bitmap data on your own!
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That's just my 200 bucks' worth!
..-=gLaDiAtOr=-..
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That's just my 200 bucks' worth!
..-=gLaDiAtOr=-..
Author
Wow, thanks guys. It took me about five minutes to get a bitmap loaded after reading your posts. Now if only I could figure these kinds of things out myself. Now on to bigger and better things, like making buttons. Anybody know anything about those?
I take it you mean the standard window buttons. Call CraeteWindow and specify "BUTTON" in the class name.
That should do the trick
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If something sounds stupid but works, it's not stupid
hButton = CreateWindow("BUTTON", "Click Me", WS_CHILD|BS_PUSHBUTTON|BS_TEXT, 20,20,100,40 hWnd,//parent window NULL, hInst, NULL); That should do the trick
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If something sounds stupid but works, it's not stupid
Author
That helps, NuffSaid, but do I have to draw the button or anything? The program runs fine but doesn''t display a button.
While we''re on the topic of blitting and device contexts, can somebody tell me how to load a bitmap onto a DirectDraw surface without using the CreateSurfaceFromFile function? This is because I''d like to use an image library (like OpenIL) to load compressed images. I use Visual Basic.
Thanks for your help.
Thanks for your help.
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