WINDEV, WEBDEV AND WINDEV MOBILEONLINE HELP
Handle of the window (or control) that had focus before the execution of this function. NULL constant if there is no previous window (or control) or if the specified window (or control) does not exist.
Handle of the window or control to use. To find out the handle of a window that was not created by WINDEV, use SysWinHandle. To find out the handle of the active window, use SysWinActive.
True if the specified window is an MDI window, False (default value) otherwise.
Last update: 05/12/2020
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All you have to do is configure your product as follows: