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LoadBitmap API Function, access the predefined bitmaps used by the Win32 API by setting the hInstance parameter to NULL.

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lamer	Posted: Apr 23 2005, 06:23 AM
Very Very Active Member Group: Members Posts: 82 Member No.: 1181 Joined: 16-April 05	Hi all! I am puzzled with LoadBitmap function. There is a bitmap resource with ID=100 If I create window by CreateWindow - everything is OK, the LoadBitmap works normaly. But if I use DialogBoxParam, that is, create it from dialog resource - the LoadBitmap just refuses to work, each time returns 0. Why? :angry: GetLastError returns "The specified resource name cannot be found in the image file." Thanks to all - this was just problem with hInstance :D

SeaFarer	Posted: Jan 2 2008, 01:43 AM
GO NAVY! Group: Admins Posts: 833 Member No.: 1464 Joined: 2-September 05	Hi, I did a search of the board and found this topic with respect to having what I believe is the same problem. Two years later.... Anyone have any suggestions? :lol:

akyprian	Posted: Jan 2 2008, 02:32 AM
Administrator Group: Admins Posts: 1994 Member No.: 1 Joined: 12-May 04	Hi Sea, As Lamer already pointed out, you need to use the proper value for the hInstance parameter depending on what bitmap you try to load. I hope it helps

Vortex

Posted: Jan 3 2008, 11:34 AM

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Posts: 85
Member No.: 8
Joined: 13-May 04

Following Iczelion's tutorial #25, I am able to display a bitmap initialized with LoadBitmap inside a dialog box created with DialogBoxParam. Can anyone point me in the right direction if I misundestood the problem?

CODE

.IF uMsg==WM_INITDIALOG

invoke LoadBitmap,hModule,ID_BITMAP
mov hBitmap,eax

.ELSEIF uMsg==WM_PAINT

invoke BeginPaint,hWnd,ADDR ps
mov hDC,eax
invoke CreateCompatibleDC,hDC
mov hMemDC,eax
invoke SelectObject,hMemDC,hBitmap
invoke GetClientRect,hWnd,ADDR rect
invoke BitBlt,hDC,0,0,rect.right,rect.bottom,hMemDC,0,0,SRCCOPY
invoke DeleteDC,hMemDC
invoke EndPaint,hWnd,ADDR ps

OS : Win XP Pro Sp2

Attached File ( Number of downloads: 5 )

Bitmapdlg.zip

akyprian	Posted: Jan 4 2008, 12:01 AM
Administrator Group: Admins Posts: 1994 Member No.: 1 Joined: 12-May 04	Hi Vortex, You are able to display the bitmap because you use a proper hModule. In the original post, lamer didn't. I suspect that SeaFarer has got a similar problem. Thanks for the demo

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