` Changing MDI/SDI behavior at runtime (Lee White ) - Icetips Article
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Par2: Changing MDI/SDI behavior at runtime
2008-05-21 -- Lee White
 
> Can I change the way a window performs at execution time. I have an MDI > window that I want to open as non-MDI under certain circumstances. If I > start the procedure via a menu item I want to open as MDI (default). If I > start the procedure via hand written code, I want to change it to non-MDI. The MDI attribute of a window is defined when the window is created at the OS level. To the best of my knowledge that cannot be changed once the window has been created. There is a way around this in Clarion but it involves some work to accomplish. If your window is in a hand coded procedure it's a lot easier to do. You can create a copy of the window without the MDI attribute and use a reference within you code, such as... Window1 WINDOW('Whatever'),AT(,,400,202),MDI END Window2 WINDOW('Whatever'),AT(,,400,202) END Window &WINDOW CODE IF MakeItMDI Window &= Window1 ELSE Window &= Window2 END OPEN(Window) The real work begins if you want to avoid the warnings about duplicate controls. You have to use the 3rd parameter of USE() to prevent duplication.


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