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LAnnContainer::SetTransparent

Summary

Sets one or more bitmap stamp objects to use white as a transparent color.

Syntax

#include "ltwrappr.h"

virtual L_INT LAnnContainer::SetTransparent(bTransparent, uFlags=0)

Parameters

L_BOOL bTransparent

Flag that indicates whether to make the bitmap transparent. Possible values are:

Value	Meaning
TRUE	Make the bitmap transparent
FALSE	Do not make the bitmap transparent. This is the default.

L_UINT 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:

Value	Meaning
0	Process only the specified object.
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.
ANNFLAG_NOTTHIS	[0x0004] Process only one level of objects within the specified container, not the container itself. If there are containers within the container, they are modified, but the objects within them are not.
ANNFLAG_RECURSE	[0x0008] Process objects within a container, and within any subcontainers, down to any level.
ANNFLAG_NOTCONTAINER	[0x0002] (Used with ANNFLAG_RECURSE) Process objects within containers, not the containers themselves.
ANNFLAG_NOINVALIDATE	[0x0010] Do not invalidate the affected rectangle in the window. Use this to avoid generating unwanted paint messages.

Returns

Value	Meaning
SUCCESS	The function was successful.
< 1	An error occurred. Refer to Return Codes.

Comments

Only bitmap stamps can be transparent. In transparent stamps, all the white pixels are considered transparent. In order for the transparent bitmaps to be painted properly, the LTEFXu.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

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.

Platforms

Win32, x64.

Example

L_INT LAnnContainer_SetTransparentExample(LAnnContainer *pLAnnContainer) 
{ 
   L_INT nRet; 
 
   nRet = pLAnnContainer->SetTransparent(TRUE); 
 
   return nRet; 
 
}