L_RectFromBitmap
#include "l_bitmap.h"
L_INT EXT_FUNCTION L_RectFromBitmap(pBitmap, ViewPerspective, lprc)
pBITMAPHANDLE pBitmap; |
/* pointer to the bitmap handle */ |
L_INT ViewPerspective; |
/* destination view perspective */ |
LPRECT lprc; |
/* pointer to the RECT structure to be translated */ |
Translates a Windows RECT structure from the bitmap's view perspective to the specified view perspective.
Parameter |
Description |
pBitmap |
Pointer to the bitmap handle referencing the bitmap that contains the rectangle. |
ViewPerspective |
Destination view perspective to which the rectangle should be translated. |
lprc |
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
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
Windows 95 / 98 / Me, Windows 2000 / XP, Windows CE.
See Also
Functions: |
L_PointFromBitmap, L_PointToBitmap, L_RectToBitmap, L_ChangeBitmapViewPerspective, L_RotateBitmapViewPerspective |
Topics: |
Example
/* This example finds out where the RECT {10,10,100,100 } */
/* of the bitmap would be in a BOTTOM_LEFT ViewPerspective */
BITMAPHANDLE LeadBitmap; /* Bitmap handle that holds the bitmap */
RECT rc;
rc.top = 10;
rc.left = 10;
rc.bottom = 100;
rc.right = 100;
L_RectFromBitmap ( &LeadBitmap, BOTTOM_LEFT, &rc );