Retrieves whether the background specified by the visual style has transparent pieces or alpha-blended pieces
#include <WinAPITheme.au3>
_WinAPI_IsThemeBackgroundPartiallyTransparent ( $hTheme, $iPartID, $iStateID )
| $hTheme | Handle to a window's specified theme data. | 
| $iPartID | The part. | 
| $iStateID | The state of the part. | 
| True: | the theme-specified background has transparent pieces or alpha-blended pieces. | 
| False: | not specified in background. | 
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