function draws a DIB to the screen.
| HDRAWDIB hdd,
| HDC hdc,
| int xDst,
| int yDst,
| int dxDst,
| int dyDst,
| LPBITMAPINFOHEADER lpbi,
| LPVOID lpBits,
| int xSrc,
| int ySrc,
| int dxSrc,
| int dySrc,
| UINT wFlags
Handle of a DrawDib DC.
Handle of the DC.
The x- and y-coordinates, in MM_TEXT client coordinates, of the upper left
corner of the destination rectangle.
Width and height, in MM_TEXT client coordinates, of the destination rectangle.
1, the width of the bitmap is used. If dyDst
1, the height of the bitmap is used.
Address of the BITMAPINFOHEADER
structure containing the image format. The color table for the DIB within BITMAPINFOHEADER
follows the format and the biHeight
member must be a positive value; DrawDibDraw
will not draw inverted DIBs.
Address of the buffer that contains the bitmap bits.
The x- and y-coordinates, in pixels, of the upper left corner of the source
rectangle. The coordinates (0,0) represent the upper left corner of the bitmap.
Width and height, in pixels, of the source rectangle.
Applicable flags for drawing. The following values are defined:
Realizes the palette used for drawing in the background, leaving the actual
palette used for display unchanged. This value is valid only if DDF_SAME_HDC is
Current image is decompressed but not drawn. This flag supercedes the
Always dithers the DIB to a standard palette regardless of the palette of the
DIB. If your application uses the DrawDibBegin
function, set this value in DrawDibBegin
rather than in DrawDibDraw
Data does not have to be drawn (that is, it can be dropped) and DDF_UPDATE
will not be used to recall this information. DrawDib checks this value only if it
is required to build the next frame; otherwise, the value is ignored.
This value is usually used to synchronize video and audio. When synchronizing
data, applications should send the image with this value in case the driver
needs to buffer the frame to decompress subsequent frames.
DIB data is not a key frame.
Use the current DC handle and the palette currently associated with the DC.
Use the current drawing parameters for DrawDibDraw
. Use this value only if lpbi
, and dySrc
have not changed since using DrawDibDraw
typically checks the parameters, and if they have changed, DrawDibBegin
prepares the DrawDib DC for drawing. This flag supercedes the DDF_SAME_DIB
and DDF_SAME_SIZE flags.
Last buffered bitmap is to be redrawn. If drawing fails with this value, a
buffered image is not available and a new image needs to be specified before the
display can be updated.
Returns TRUE if successful or FALSE otherwise.
DDF_DONTDRAW causes DrawDibDraw
to decompress but not display an image. A subsequent call to DrawDibDraw
specifying DDF_UPDATE displays the image.
If the DrawDib DC does not have an off-screen buffer specified, specifying
DDF_DONTDRAW causes the frame to be drawn to the screen immediately. Subsequent
calls to DrawDibDraw
specifying DDF_UPDATE fail.
Although they are set at different times, DDF_UPDATE and DDF_DONTDRAW can be
used together to create composite images off-screen. When the off-screen image
is complete, you can display the image by calling DrawDibDraw
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