SaveState and LoadState

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   Hi,

I want to save user layout preferences in a database to use in the next program execution. For this I'm saving the result of SaveLayoutToString.

In the next execution the initial layout is the original, and then I call LoadLayoutFromString. The layout changes like expected, but with empty panes. When I try to reassign the handles the program crashes.

Does this have a solution, or do I have to parse the XML and use the relevant values in the CreatePane method?

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Carlos Rocha Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 11 February 2008 Location: Portugal Status: Offline Points: 92	Post Options Post Reply Quote Carlos Rocha Report Post Thanks(0) Quote Reply Topic: SaveState and LoadState Posted: 19 April 2010 at 1:17am
	Hi, I want to save user layout preferences in a database to use in the next program execution. For this I'm saving the result of SaveLayoutToString. In the next execution the initial layout is the original, and then I call LoadLayoutFromString. The layout changes like expected, but with empty panes. When I try to reassign the handles the program crashes. Does this have a solution, or do I have to parse the XML and use the relevant values in the CreatePane method?
	SuitePro 20.3.0 OS: Windows 10 Language: Visual Objects 2.8

pate Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 27 April 2009 Status: Offline Points: 36	Post Options Post Reply Quote pate Report Post Thanks(0) Quote Reply Posted: 11 May 2010 at 1:11pm
	That's the way I do it, after I load the Layout from string, the first thing I do is set the handles of the container controls: For J = 1 To .PanesCount DockingPaneManager.Panes(J).SetHandle Elastic(J).hwnd Next J then set some other stuff like titles, colors, and pane options.

Carlos Rocha Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 11 February 2008 Location: Portugal Status: Offline Points: 92	Post Options Post Reply Quote Carlos Rocha Report Post Thanks(0) Quote Reply Posted: 11 May 2010 at 4:46pm
	Thank you for pulling in But I'm not sure if I understand you. Do you re-assign the handles after LoadLayoutFromString, or the first thing you do is loading the layout and only then assign the handles (didn't try this yet)?
	SuitePro 20.3.0 OS: Windows 10 Language: Visual Objects 2.8

pate Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 27 April 2009 Status: Offline Points: 36	Post Options Post Reply Quote pate Report Post Thanks(0) Quote Reply Posted: 11 May 2010 at 4:56pm
	<<<<< Do you re-assign the handles after LoadLayoutFromString, or the first thing you do is loading the layout and only then assign the handles >>>>> Not sure I understand your question, aren't these two the same thing? Each pane has a container control. After I do ANY Load from string, I have to assign the handles whether it is the first time thru, or if the user is loading in a different layout.

Carlos Rocha Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 11 February 2008 Location: Portugal Status: Offline Points: 92	Post Options Post Reply Quote Carlos Rocha Report Post Thanks(0) Quote Reply Posted: 11 May 2010 at 5:44pm
	In my case if I load a layout AFTER assigning the handles the panes become empty, and if I assign again the handles the program crash. I presume you can (re)assign the handles at any time, right?
	SuitePro 20.3.0 OS: Windows 10 Language: Visual Objects 2.8

pate Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 27 April 2009 Status: Offline Points: 36	Post Options Post Reply Quote pate Report Post Thanks(0) Quote Reply Posted: 11 May 2010 at 6:02pm
	Yes, I have no problem reassigning them multiple times. Using VB6 SP6, and picture boxes as the container controls. I have several preset layouts that the user can load from string. Each time, it loads the layout, then I assign the handles to the panes, then set the titles, color, and pane options. I've never seen it crash, so I assume it is very possible to do.

Baldur Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 22 November 2006 Location: Germany Status: Offline Points: 244	Post Options Post Reply Quote Baldur Report Post Thanks(0) Quote Reply Posted: 14 May 2010 at 4:52am
	You have first define the layout by LoadLayoutxxx. If LoadLayou doesn't create panes, you can create a default-layout. To attach the panes, you have to use the DockingPane_AttachPane-Event. Depending on the associated Item.Id-Property you can than create and attach the corresponding forms/pictureboxes. Define a unique Id for the type of pane. The reason is, that LoadLayout destroyes all prevoius created panes and create new panes on the loaded layout.