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L_RectFromBitmap

Summary

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

Syntax

#include "l_bitmap.h"

L_LTKRN_API L_INT L_RectFromBitmap(pBitmap, ViewPerspective, lprc)

Parameters

pBITMAPHANDLE pBitmap

Pointer to the bitmap handle referencing the bitmap that contains the rectangle.

L_INT ViewPerspective

Destination view perspective to which the rectangle should be translated.

L_RECT * lprc

Pointer to the RECT structure to be translated.

Returns

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

Comments

To use this function, do the following:

Declare a Windows RECT structure and a pointer to it.
Assign the values of a known rectangle in the bitmap.
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.)
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

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.

Platforms

Win32, x64, Linux.

Example

This example finds out where the RECT {10,10,100,100 }
of the bitmap would be in a BOTTOM_LEFT ViewPerspective.

L_INT RectFromBitmapExample(pBITMAPHANDLE LeadBitmap,LPRECT       rc) 
{ 
   L_INT nRet; 
 
   rc->top    = 10; 
   rc->left   = 10; 
   rc->bottom = 100; 
   rc->right  = 100; 
   nRet = L_RectFromBitmap (LeadBitmap, BOTTOM_LEFT, rc ); 
   if(nRet != SUCCESS) 
      return nRet; 
   return SUCCESS; 
}