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Bitmap Resources

Started by jharkey Sep 18, 2000 at 6:02 PM 4 replies 250+ views

Original Post

Sep 18, 2000 at 6:02 PM

Hello I need help with loading a bitmap that is a resource. I have it in the .rc script, but i cant load it and blt it to the screen. I dont think that my LoadImage function is correct, but i''m not sure. Please help me. extern HINSTANCE hinst; HBITMAP background=NULL; bool LoadWindow(HWND hwnd) { background=(HBITMAP)LoadImage (hinst,"IDB_BITMAP_WINDOW",IMAGE_BITMAP, NULL,NULL,LR_DEFAULTCOLOR); ////i also tried the macro MAKEINTRESOURCE (IDB_BITMAP_WINDOW), but that didnt work either//// return true; } bool DrawWindow(HWND hwnd) { HDC hdc=GetDC(hwnd); HDC whdc=CreateCompatibleDC(hdc); SelectObject(whdc,background); BitBlt(hdc,0,0,100,100,whdc,0,0,SRCCOPY); DeleteDC(whdc); ReleaseDC(hwnd,hdc); return true; } bool DestroyWindow() { DeleteObject(background); return true; }

Ecco2000

Sep 18, 2000 at 6:30 PM

If you open up the help file and look up LoadImage and Blt it will tell you all the requirements and parameter that go along with using resource bitmaps. you could also try changing the name of the resource in the resource editor from:
IDB_Bitmap
to:
"IDB_Bitmap"

jharkey

Sep 18, 2000 at 10:30 PM

Thanks, but i''ve done everything that the help says and it still
doesnt work. i cant even load a bitmap that the resource editor
itself makes. i tried renaming it like you said, but no luck.
i''ve looked at lots of the examples in the help and cant find
what i''m doing different. maybe someone could tell me how step
by step. thanks

DeltaVee

Sep 18, 2000 at 10:44 PM

when you create (or create through loading) the image in the resource editor give it an ID.

Then you LoadImage(NULL,MAKEINTRESOURCE(THE ID YOU JUST DEFINED), yada, yada, yada);

D.V.

--------------------------
Carpe Diem

jharkey

Sep 18, 2000 at 11:31 PM

Thanks DeltaVee, but i tried that and it didnt work. i cant figure it out.

Scooter

Sep 20, 2000 at 10:37 AM

If you defined the bitmap correctly in the resource files then it should work the makeintroresource

background=(HBITMAP)LoadImage (hinst,MAKEINTRESOURCE(IDB_BITMAP),IMAGE_BITMAP,
0,0,LR_DEFAULTCOLOR | LR_DEFAULTSIZE);

if this doesn''t work then you need to check your resource files.

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