LBitmapBase::RectFromBitmap

#include "ltwrappr.h"

virtual L_INT LBitmapBase::RectFromBitmap(nViewPerspective, pRect)

L_INT nViewPerspective;	destination view perspective
LPRECT pRect;	pointer to the RECT structure to be translated

Translates a Windows RECT structure from the class object's bitmap view perspective to the specified view perspective.

Parameter	Description
nViewPerspective	Destination view perspective to which the rectangle coordinates should be translated.
pRect	Pointer to the RECT structure to be translated.

Returns

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

Comments

To use this function, do the following:

1.	Declare a Windows RECT structure and a pointer to it.
2.	Assign the values of a known rectangle in the bitmap.
3.	Call this function, passing the pointer to the RECT structure, and specifying the destination view perspective. (The function gets the source view perspective from the bitmap handle.)
4.	Get the translated rectangle from the RECT structure, which this function has updated.

For general information about view perspectives, refer to Accounting for View Perspective.

Required DLLs and Libraries

LTDIS
LTFIL

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

#define MAKE_IMAGE_PATH(pFileName) TEXT("C:\\Users\\Public\\Documents\\LEADTOOLS Images\\")pFileName 
L_INT LBitmapBase__RectFromBitmapExample() 
{ 
   L_INT nRet; 
   LBitmapBase  MyBitmap; 
   RECT Rect={10,10,100,200}; 
   nRet =MyBitmap.Load(MAKE_IMAGE_PATH(TEXT("image1.cmp")),24); 
   if(nRet !=SUCCESS) 
      return nRet; 
   nRet =MyBitmap.RectFromBitmap(BOTTOM_LEFT, &Rect); 
   if(nRet !=SUCCESS) 
      return nRet; 
   return SUCCESS; 
}

Help Version 19.0.2017.10.27

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LEADTOOLS Raster Imaging C++ Class Library Help

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Summary of Features

Functions:	LBitmapBase::RectToBitmap, LBitmapBase::PointFromBitmap, LBitmapBase::PointToBitmap, Class Members
Topics:	Accounting for View Perspective