Opens the theme data for a window and its associated class.
HTHEME OpenThemeData( HWND hwnd, LPCWSTR pszClassList );
Handle of the window for which theme data is required.
Pointer to a string that contains a semicolon-separated list of classes.
OpenThemeData tries to match each class, one at a time, to a class data section in the active theme. If a match is found, an associated HTHEME handle is returned. If no match is found NULL is returned.
The pszClassList parameter contains a list, not just a single name, to provide the class an opportunity to get the best match between the class and the current visual style. For example, a button might pass L"OkButton;Button" if its ID is ID_OK. If the current visual style has an entry for OkButton, that is used; otherwise no visual style is applied.
Class names for the Aero theme are defined in AeroStyle.xml.
|Minimum supported client||Windows Vista [desktop apps only]|
|Minimum supported server||Windows Server 2003 [desktop apps only]|