#include "BIFILTER.H"
HANDLE CALLBACK HistDIBGen( HANDLE hSrcDIB,
HWND hHisChild,
BYTE nSelect)
Description
This function makes the histogram of the source device independent bitmap and displays the created histogram in the window specified by hHisChild. It works with 1, 4, 8 or 24 bits/pixel. In case of 24 bits/pixel, only one channel is used from the existing R, G, B channels. The ‘nSelect’ parameter specifies the required channel.
Parameters
|
HANDLE |
hSrcDIB |
Source DIB |
|
HWND |
hHisChild |
Child window for histogram. |
|
BYTE |
nSelect |
Plane selector in case of 24 bits/pixel. R/G/B corresponds 1/2/3 values. Not used in case of 1,4,8 bits/pixel. |
Return values
Handle of the newly created DIB on success or NULL on failure.
Programming notes
The width of hHisChild window must be large enough to show the histogram. This means that in case of 8 bits/pixel the width of the client area of the window must be at least 256 pixels.
Requirements
Header : Declared in BIFilter.h; include BIFilter.h.
Library : Use BIFilter.lib.
DLLs : BIFilter.dll.