LEADTOOLS Raster imaging C++ Class library help
| LEADTOOLS Raster Imaging C++ Class Library Help > Classes and Member Functions > LAnnStamp > LAnnStamp Member Functions > LAnnStamp::SetTransparent |
#include "ltwrappr.h"
virtual L_INT LAnnStamp::SetTransparent(bTransparent, uFlags=0)
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L_BOOL bTransparent; |
/* flag that indicates whether to make the bitmap transparent */ |
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L_UINT uFlags; |
/* flags that determine which objects to process */ |
Sets the bitmap associated with the Stamp object to use a transparent color. A transparent color is not painted when the image is painted.
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Parameter |
Description |
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bTransparent |
Flag that indicates whether to make the bitmap transparent. Possible values are: |
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Value |
Meaning |
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TRUE |
Make the bitmap transparent. |
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FALSE |
Do not make the bitmap transparent. This is the default. |
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uFlags |
Flags that determine which objects to process. Most of the flags apply only to container objects. You can combine values when appropriate by using a bitwise OR ( | ). The following are valid values: |
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Value |
Meaning |
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0 |
Process only the specified object. |
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ANNFLAG_SELECTED |
[0x0001] Process only objects that have the selected property set to TRUE. For getting and setting the selected property, use the LAnnotation::IsSelected and LAnnotation::SetSelected functions. |
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ANNFLAG_NOINVALIDATE |
[0x0010] Do not invalidate the affected rectangle in the window. Use this to avoid generating unwanted paint messages. |
Returns
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SUCCESS |
The function was successful. |
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< 1 |
An error occurred. Refer to Return Codes. |
Comments
Only Point and Stamp objects that are using a bitmap can be set to use a transparent color. By default the transparent color is white (0x00FFFFFF). In order for the transparent bitmaps to be painted properly the LTEFX15u.dll needs to be present for WIN32. If the appropriate DLL is not present, the transparent bitmap stamps will be painted as non-transparent bitmap stamps.
Required DLLs and Libraries
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LTANN For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application. |
Win32, x64.
See Also
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Functions: |
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Topics |
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Example
L_INT LAnnStamp_SetTransparentExample(LAnnStamp *pLAnnStamp)
{
L_INT nRet = SUCCESS;
if(pLAnnStamp->GetTransparent()==FALSE)
nRet = pLAnnStamp->SetTransparent(TRUE);
return nRet;
}
