I am trying to drag a node of a TreeView in a VB6 application to the window of a separate WPF application. The DragEnter event is not firing in the target window. What steps can I take to troubleshoot this issue?
I'm guessing, but IF you're trying to drag over a panel element you need to have a background defined.
From MSDN,
Panel elements do not receive mouse or stylus events if a Background is not defined. If you need to handle mouse or stylus events but do not want a background for your Panel, use Transparent.
You can read the complete post here: https://msdn.microsoft.com/en-us/library/system.windows.controls.panel.background.aspx
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In my VSTO projects (Office 2007 / 2010) I would like to use a small popup control (think Tooltip like features; fade animation and mouse interaction).
I would prefer to use WPF. If I were to do this in WPF I would create a custom Popup Control.
In VSTO, as far as I understand it, I must use a WPF window and then have 2 options, either I put this window in a Windows Form Container or I get the Hwnd of my office app and I add this Hwnd to the Owner property of a WPF Window. Am I correct here?
Creating a whole window, animating it on and off the screen etc to look like a ToolTip seems to be overkill.
So my question is how should I do this. I would prefer WPF.
I don't know if this would work but my first thought is to build a very tiny WPF window which is transparent and start it with the Office App. I can then build a Popup Control (which is a child of this tiny window) which I show and not show at a mouse position. Pretty sure a popup can appear outside the bounds of its parent window.
Just wanted to tidy up my own question with what I did. In the VSTO addin project I added a reference to WindowsBase, PresentationFramework and presentation core.
And then I just follow any tutorial or example that adds a WPF Popup. By popup I mean a System.Windows.Controls.Primitives.Popup. For the Placement I used PlacementMode.Absolute and then used a window point to set its position.
This pretty much answers my question. Of course this popup is literally floating above your office window so you will need to make sure that you control it for example if the office window moves, is minimized and the like.
Here's what I am trying to accomplish - To create an MDI application in WPF, which can host child web applications. I am using WPF webbrowser control to render web applications. WPF inherently doesn't seem to support MDI applications, so after a bit of searching, I found this project, which uses UI controls to simulate windows and manages them inside a WPF canvas. This approach seems to work reasonably well until I start adding webbrowser control object as an MDI child.
When I add webbrowser control as an MDI child, it always appears on top of other WPF elements including other MDI child controls (as shown below). From what I understand, webbrowser control always appears on top of any other WPF object except for window (and popup). Assuming that's true, I think I need to use actual WPF window to avoid overlapping issue.
The only solution i can think of right now is to wrap WPF window inside an HwndHost object and then add that as an MDI child. However it appears that a child window cannot have title bar. That means that i need to have a window that has a dummy title bar area (just like actual window title bar) and actual content area (which will show webbrowser control) as shown below (Red border is HwndHost object).
This approach seems to solve the overlapping issue. The next thing i need to try is to let users click on the dummy title bar and drag the MDI window inside the canvas element.
Questions -
Is my understanding about WPF webbrowser control overlapping behavior right? If not, what am i missing?
Is the second approach a step in right direction for accomplishing what i want? If yes, how do i implement the drag behavior for HwndHost?
Is there any other alternate solution i can try?
Note:
Although many consider MDI not an elegant solution, I do not have a choice. (We tried alternate solutions like tabbed windows/dockable
windows, but were not well received)
I am quite new to interop programming, and do not understand the
concepts well. Please correct me if i am misunderstanding things.
Thanks!
I need to create an image of a custom WPF control and save it to file. I do it by this way (http://denisvuyka.wordpress.com/2007/12/03/wpf-diagramming-saving-you-canvas-to-image-xps-document-or-raw-xaml/).
The control contains several panels (ie. StackPanel). When this control is rendered on the form it looks perfectly. But when I render it in memory and save to file all controls in panels are not aligned. They take area that they need only and they doesn't stretch.
When I used WPF 3.5 it worked. This issue appeared after I updated my project to WPF 4.0.
Could anybody explain me what changes in WPF 4.0 cause this behaviour and how I can resolve it?
I am deriving a custom control from StackPanel (or just using the usual UserControl class). This control should be focusable within the application by either tabbing or clicking the control. When focus occurs, based on other criterion the control will expand and show certain elements. The control will also choose a default child control to focus on.
The issue I have is that I can find no way to focus on a UserControl. The Got/LostFocus events don't fire when I click on the control.
I am aware of the Focusable property, but it doesn't seem to be available on any of the client dlls for Silverlight (using v4 of SDK)
What I would really like is some advice on how best achieve the functionality of a panel I can tab to, as the UI design I have in mind hangs on this.
I guess the control you are looking for, is an Accordion or Expander control.
Here, you will find steps to use the Accordion control. Hope that helps.
Am looking to implement a detach and popup UI behaviour in my applcation.
It basically means that I will be displaying say, a stackpanel with lot elements on the right side of my page. And on a button click, I want the stackpanel part to popup(removing its allocated space in the UI) and should be able to move it above the underlying wpf UI.
What am trying to do is that remove the stackpanel from its parent grid on button click and add it as the child of wpf popup control. But I am facing some issues doing this way. However I just want to know whether I am doing it in the correct way or do anyone have a good alternative for implementing this pin out functionality am specified here?
Thanks,
Vinsdeon
How about using this kinda nice control, AvalonDock, which is simulating Visual Studio's dockable components behaviors?
http://avalondock.codeplex.com/
It will spare you the pain of developing such a specific functionality, and will have a great reusability anyway