The PSM_GETCURRENTPAGEHWND message retrieves a handle to the window of the current page of a property sheet. You can send the message explicitly or by using the PropSheet_GetCurrentPageHwnd macro.
PSM_GETCURRENTPAGEHWND
wParam = 0;
lParam = 0;
Return Values
Returns a handle to the window of the current property sheet page.
Remarks
Use the PSM_GETCURRENTPAGEHWND message with modeless property sheets to determine when to destroy the dialog box. When the user selects the OK or Cancel button, PSM_GETCURRENTPAGEHWND returns NULL, and you can then use the DestroyWindow function to destroy the dialog box.
See Also
DestroyWindow, PropertySheet, PropSheet_GetCurrentPageHwnd