Gets the pixel count of the specified annotation object.
#include "ltwrappr.h"
virtual L_INT LAnnotation::GetArea(puCount)
Address of the variable to be updated with the pixel count.
Value | Meaning |
---|---|
SUCCESS | The function was successful. |
< 1 | An error occurred. Refer to Return Codes. |
The pixel count is the number of pixels contained in a region extracted from the annotation object, without resizing. It is equivalent to calling LAnnotation::GetRgnHandle with pRgnXForm set to NULL and then getting a pixel count of the resulting region.
Win32, x64.
L_INT LAnnotation_GetAreaExample()
{
LBitmap MyBitmap;
ANNRECT annRect;
L_SIZE_T uCount;
LAnnRectangle MyAnnRectangle;
annRect.left = 50;
annRect.top = 50;
annRect.right = 150;
annRect.bottom = 150;
MyAnnRectangle.SetRect(&annRect);
//Area = 101 x 101
MyAnnRectangle.GetArea(&uCount);
HRGN hRgn;
RECT rect;
//Bounding rectangle is (50,50,151,151)
MyAnnRectangle.GetRgnHandle(&hRgn);
GetRgnBox(hRgn, &rect);
DeleteObject(hRgn);
return SUCCESS;
}
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