BCGControlBar Pro for MFC
static BOOL CBCGPWinXPVisualManager::IsWinXPThemeAvailible ( )
static

Tells whether a Windows theme is available.

Returns
Nonzero if there is a Windows theme available; otherwise 0.

Call this function to determine whether a Windows theme is available. It will always return 0 under Win9x/ME/NT/2000.