January 9, 2009 12:19am pst

11.17.2008 at 04:55PM PST, ID: 23912889

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8.0

How to move a bitmap on the screen

Asked by razn in Graphics & Game Programming, Game Programming, Multimedia Programming

Tags: c+

Hi,
I have a code that draw a bitmap on the screen. I first load the bitmap and then draw it. I would like to create a scroll effect that the bitmap moves on the horizontal axis. How can I do it without erase re-drawaing the bitmap each time.
Thanks,
raz
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             hbm = LoadBitmap(hInst,MAKEINTRESOURCE(IDB_BITMAP_BACKGROUND));
       BITMAPINFO			bmpInfo;
	BITMAPFILEHEADER	bmpFileHeader;
	int nWidth;
	int nHeight;
	HBITMAP hbmT;
	HDC hdcMem = CreateCompatibleDC(NULL);
	ZeroMemory(&bmpInfo,sizeof(BITMAPINFO));
	hbmT = SelectBitmap(hdcMem,hbm);
	bmpInfo.bmiHeader.biSize=sizeof(BITMAPINFOHEADER);
	GetDIBits(hdcMem,hbm,0,0,NULL,&bmpInfo,DIB_RGB_COLORS);
	nWidth = abs(bmpInfo.bmiHeader.biWidth);
	nHeight= abs(bmpInfo.bmiHeader.biHeight);
	BITMAP bm;
	GetObject(hbm,sizeof(bm),&bm);
// Here the bitmap is being draw at position x,y
	BitBlt(hdc,x,y,bm.bmWidth,bm.bmHeight,hdcMem,0,0,SRCCOPY);
	DeleteDC(hdcMem);

           
         

Keywords: How to move a bitmap on the screen

	Title
1	Bitmap
2	Scrolling continuous bitmap
3	Drawing Bitmaps
4	Drawing to a bitmap.
5	zoomed bitmap
6	Displaying bitmaps

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How to move a bitmap on the screen

Asked by razn in Graphics & Game Programming, Game Programming, Multimedia Programming

Tags: c+

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