#include "ltwrappr.h"
L_BOOL LBase::EnableCallBack (bEnable)
L_BOOL bEnable; |
flag that indicates whether to enable or disable the callback functions |
Enables or disables the callback functions.
Parameter | Description | |
bEnable | Flag that indicates whether to enable or disable the callback functions. Possible values are: | |
Value | Meaning | |
TRUE | Enable the callback functions. | |
FALSE | Disable the callback functions. |
The previous setting.
Call this function to enable or disable the callback overridable functions for your class object. This will enable or disable the callback functions which exist in the calling object. Other objects will not be affected by this function. All LEADTOOLS C++ Class Library classes use this setting to enable or disable the various callback functions which exist in classes derived from LBase.
Required DLLs and Libraries
LTKRN 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.
Functions: |
#define MAKE_IMAGE_PATH(pFileName) TEXT("C:\\Users\\Public\\Documents\\LEADTOOLS Images\\")pFileName
L_INT LBase__EnableCallBackExample()
{
L_INT nRet;
LBitmap MyBitmap, Bitmap2;
nRet = Bitmap2.Load(MAKE_IMAGE_PATH(TEXT("Image1.cmp")),24); //load the bitmap at 24 bitsperpixel
if(nRet != SUCCESS)
return nRet;
if(MyBitmap.IsCallBackEnabled()==FALSE)
MyBitmap.EnableCallBack(TRUE);
//since the callback functions are enabled for MyBitmap object then
//LBitmapBase::ColorResBitmapCallBack() function for this object will be called repeatedly
nRet = MyBitmap.ColorRes(Bitmap2, 8);
if(nRet != SUCCESS)
return nRet;
return SUCCESS;
}
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