How to detect that a modeless TaskDialog is closed

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   I'm running a modeless TaskDialog using the create method.

My question is: "How do I detect that the dialog is closed ?" When I press a button the TaskDialog closes automatically, but the class of cause still lives. I was expecting that I could test the GetSafeHwnd() of the TaskDialog, but it seems that this is not set to NULL after it is closed ?

I'm not able to process the OnButtonClicked callbacks, since I'm running inside another windows message.

-cpede

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cpede Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 13 August 2004 Location: Denmark Status: Offline Points: 645	Post Options Post Reply Quote cpede Report Post Thanks(0) Quote Reply Topic: How to detect that a modeless TaskDialog is closed Posted: 17 December 2010 at 8:16am
	I'm running a modeless TaskDialog using the create method. My question is: "How do I detect that the dialog is closed ?" When I press a button the TaskDialog closes automatically, but the class of cause still lives. I was expecting that I could test the GetSafeHwnd() of the TaskDialog, but it seems that this is not set to NULL after it is closed ? I'm not able to process the OnButtonClicked callbacks, since I'm running inside another windows message. -cpede
	Product: Xtreme ToolkitPro (20.3.0) Platform: Windows 10 (x64) Language: Visual Studio 2017 (C++)

cpede Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 13 August 2004 Location: Denmark Status: Offline Points: 645	Post Options Post Reply Quote cpede Report Post Thanks(0) Quote Reply Posted: 20 December 2010 at 3:49am
	OK I can check the ::IsWindowsVisible, and then I can continue. But isn't it a little strange that the dialog is closed, and the handle is still valid? -cpede
	Product: Xtreme ToolkitPro (20.3.0) Platform: Windows 10 (x64) Language: Visual Studio 2017 (C++)

rdhd Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 13 August 2007 Location: United States Status: Offline Points: 867	Post Options Post Reply Quote rdhd Report Post Thanks(0) Quote Reply Posted: 23 January 2011 at 11:48am
	It seems strange that you would be calling Create on a dialog you want to be modeless. I assume you are calling DoModal, in which case calling Create is not necessary. If you call Create, you need to call DestroyWindow.

cpede Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 13 August 2004 Location: Denmark Status: Offline Points: 645	Post Options Post Reply Quote cpede Report Post Thanks(0) Quote Reply Posted: 24 January 2011 at 3:36am
	What do you mean? It is normal to call the Create method to make a dialog modeless, whereas the DoModal makes is modal? But on standard dialogs, closing the dialog means calling destroy, and then the window handle becomes NULL. This is somehow different on the TaskDialog, and that was what I was asking about; "if IsWindowVisible was the correct and recommended way to detect if a TaskDialog is closed"? -cpede
	Product: Xtreme ToolkitPro (20.3.0) Platform: Windows 10 (x64) Language: Visual Studio 2017 (C++)

rdhd Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 13 August 2007 Location: United States Status: Offline Points: 867	Post Options Post Reply Quote rdhd Report Post Thanks(0) Quote Reply Posted: 24 January 2011 at 10:27am
	Sorry, I was thinking modal not modeless.

jimmy Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 11 November 2003 Location: Austria Status: Offline Points: 515	Post Options Post Reply Quote jimmy Report Post Thanks(0) Quote Reply Posted: 24 January 2011 at 8:37pm
	Hi, How do you create the instance ? With new, global, ??? Jimmy

rdhd Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 13 August 2007 Location: United States Status: Offline Points: 867	Post Options Post Reply Quote rdhd Report Post Thanks(0) Quote Reply Posted: 25 January 2011 at 10:25am
	I have not worked with this particular class but I would assume you create a window the same way you create any window in Windows. When a modeless window is created, the call to destroy the window depends on the design. Some windows destroy themselves on close. Some windows are "global" and remain valid until some other code destorys the window. If this window is not destorying itself and you want that behavior, subclass the window and when the close event occurs, call DestroyWindow.