Sets the alpha to a specified value in a given rectangle
#include <WinAPITheme.au3>
_WinAPI_BufferedPaintSetAlpha ( $hBP [, $iAlpha = 255 [, $tRECT = 0]] )
| $hBP | Handle of the buffered paint context. |
| $iAlpha | [optional] The alpha value to set. The alpha value can range from zero (fully transparent) to 255 (Default)(fully opaque). |
| $tRECT | [optional] $tagRECT structure that specifies the rectangle in which to set the alpha. If this parameter is 0 (Default), the entire buffer is used. |
| Success: | 1. |
| Failure: | 0 and sets the @error flag to non-zero, @extended flag may contain the HRESULT error code. |
This function requires Windows Vista or later.
Search BufferedPaintSetAlpha in MSDN Library.