Changes a Windows enhanced metafile (EMF) into a LEAD Technologies bitmap and, if successful, frees the enhanced metafile.
static L_INT LChange::ChangeFromEMF(pLBitmap, uStructSize, hEmf, uWidth, uHeight)
Pointer to the bitmap object to be updated with the changed file.
Size in bytes, of the structure pointed to by pLBitmap. Use sizeof(BITMAPHANDLE).
Handle to the EMF to be changed.
Amount by which to scale the enhanced metafiles original width.
Amount by which to scale the enhanced metafiles original height.
|SUCCESS||The function was successful.|
|< 1||An error occurred. Refer to Return Codes.|
If this function is successful, hEmf is freed.
The enhanced metafile can be loaded at the original dimension or scaled by using the uWidth and uHeight parameters.
If uWidth == 0 and uHeight == 0 - the enhanced metafile is loaded at the size present in the file.
If uWidth == 0 and uHeight > 0 - the enhanced metafile is stretched so that it has the height uHeight (preserving the aspect ratio).
If uWidth > 0 and uHeight == 0 - the enhanced metafile is stretched so that it has the width uWidth (preserving the aspect ratio).
If uWidth > 0 and uHeight > 0 - the enhanced metafile is stretched so that it has the width uWidth and height uHeight (the aspect ratio is ignored).
This example loads a bitmap, converts it to a EMF, then converts the EMF back to a bitmap.
L_INT LChange__ChangeFromEMFExample(LBitmap * pLeadBitmap)
LBitmap Bitmap ; /* Bitmap handle for the initial image */
/* Load a bitmap, keeping its own bits per pixel */
nRet = Bitmap.Load(MAKE_IMAGE_PATH(TEXT("ImageProcessingDemo\\Image3.cmp")), 0, ORDER_BGR, NULL, NULL);
if(nRet != SUCCESS)
/* Convert the initial bitmap to a EMF */
hEMF = LChange::ChangeToEMF( &Bitmap );
/* Convert the EMF to create a new LEAD bitmap and preserve the size */
nRet = LChange::ChangeFromEMF(pLeadBitmap, sizeof(BITMAPHANDLE), hEMF, 0, 0);
if(nRet != SUCCESS)
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