BitBlt.md

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Function name : BitBlt

Group: Bitmap - Library: gdi32

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The BitBlt function performs a bit-block transfer of the color data corresponding to a rectangle of pixels from the specified source device context into a destination device context.

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Code examples:

Placing an arbitrary rectangular area of main VFP window on the Clipboard
How to copy the image of a form to the Clipboard using Bitmap API functions
How to print FoxPro form
Storing screen shot of a form to bitmap file
Using the LoadImage function to have a bitmap file loaded and displayed on VFP main window
Drawing Windows predefined bitmaps using the LoadBitmap functions
Splash Screen for the VFP application
How to put a horizontal text scrolling on the form (a news line, marquee)
How to put a vertical text scrolling on the form (a movie cast)
Displaying animated images on FoxPro form with BitBlt and StretchBlt functions
Storing screen shot of a form to enhanced metafile (*.emf)
Copying picture of the active form to the Clipboard using Enhanced Metafile API functions
How to print FoxPro form -- II
GDI+: saving image of FoxPro form to graphics file (BMP, GIF, JPG, PNG, TIF)
GDI+: sending image of FoxPro form to printer
GDI+: copying to the Clipboard (a) image of active FoxPro window/form, (b) image file
GDI+: how to make VFP controls visually shake and shudder
How to make a VFP form fading out when released (GDI+ version)
How to make a VFP form fading out when released (GDI version)

Declaration:

BOOL BitBlt(
  HDC hdcDest, // handle to destination DC
  int nXDest,  // x-coord of destination upper-left corner
  int nYDest,  // y-coord of destination upper-left corner
  int nWidth,  // width of destination rectangle
  int nHeight, // height of destination rectangle
  HDC hdcSrc,  // handle to source DC
  int nXSrc,   // x-coordinate of source upper-left corner
  int nYSrc,   // y-coordinate of source upper-left corner
  DWORD dwRop  // raster operation code
);  

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FoxPro declaration:

DECLARE INTEGER BitBlt IN gdi32;
	INTEGER hDestDC,;
	INTEGER x,;
	INTEGER y,;
	INTEGER nWidth,;
	INTEGER nHeight,;
	INTEGER hSrcDC,;
	INTEGER xSrc,;
	INTEGER ySrc,;
	INTEGER dwRop  

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Parameters:

hdcDest [in] Handle to the destination device context.

nXDest [in] Specifies the logical x-coordinate of the upper-left corner of the destination rectangle.

nYDest [in] Specifies the logical y-coordinate of the upper-left corner of the destination rectangle.

nWidth [in] Specifies the logical width of the source and destination rectangles.

nHeight [in] Specifies the logical height of the source and the destination rectangles.

hdcSrc [in] Handle to the source device context.

nXSrc [in] Specifies the logical x-coordinate of the upper-left corner of the source rectangle.

nYSrc [in] Specifies the logical y-coordinate of the upper-left corner of the source rectangle.

dwRop [in] Specifies a raster-operation code.

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Return value:

If the function succeeds, the return value is nonzero.

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Comments:

Not all devices support the BitBlt function. For more information, see the RC_BITBLT raster capability entry in the GetDeviceCaps function as well as the following functions: MaskBlt, PlgBlt, and StretchBlt.

BitBlt returns an error if the source and destination device contexts represent different devices.

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