Resizes the region defined in the class object's bitmap by the specified number of pixels.
#include "ltwrappr.h"
virtual L_INT LBitmapRgn::ResizeRgn(uInflate, uFlag, bAsFrame)
Number of pixels by which to resize the region.
Flag that indicates whether to contract or expand the bitmap region. Possible values are:
Value | Meaning |
---|---|
RGN_EXPAND | [0x0001] Expand the region. |
RGN_CONTRACT | [0x0002] Contract the region. |
Flag that indicates whether to create a frame associated with the resized bitmap region. Possible values are:
Value | Meaning |
---|---|
TRUE | Create a frame of thickness uDim for the resized region. If uFlags is RGN_EXPAND, the frame created will exist outside the boundaries of the resized region. If uFlags is RGN_CONTRACT, the frame will be within the boundaries of the resized region. |
FALSE | Resize the region only. Do not create a frame. |
Value | Meaning |
---|---|
SUCCESS | The function was successful. |
< 1 | An error occurred. Refer to Return Codes. |
This function keeps the same bitmap handle and resizes the bitmap region that it references.
This function supports 12 and 16-bit grayscale and 48 and 64-bit color images. Support for 12 and 16-bit grayscale and 48 and 64-bit color images is available only in the Document/Medical toolkits.
This function supports signed data images.
This function supports 32-bit grayscale images.
Win32, x64.
L_INT LBitmapRgn__ResizeRgnExample(LBitmap & Bitmap, L_TCHAR * szFile)
{
L_INT nRet;
LBitmapRgn Region;
nRet =Bitmap.Load(szFile);
if(nRet !=SUCCESS)
return nRet;
RECT rect = { Bitmap.GetWidth() / 4, Bitmap.GetHeight() / 4,
Bitmap.GetWidth() / 2, Bitmap.GetHeight() / 2 };
Region.SetBitmap(&Bitmap);
nRet =Region.SetRgnRect(&rect);
if(nRet !=SUCCESS)
return nRet;
nRet =Bitmap.Invert();
if(nRet !=SUCCESS)
return nRet;
nRet =Region.ResizeRgn(20, RGN_CONTRACT, FALSE);
if(nRet !=SUCCESS)
return nRet;
nRet =Bitmap.Invert();
if(nRet !=SUCCESS)
return nRet;
return SUCCESS;
}
Help Collections
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Imaging, Medical, and Document
C API/C++ Class Libraries
Imaging, Medical, and Document
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