From what I understand, the popup exists within it's own visual tree. However, I've noticed a few properties, Clip and ClipToBounds. What I am wanting to do is Visually clip a popup at the right and bottom edges of a window regardless of the fact that the popup is independent of the bounds of the window. I'm not using XAML, but if somebody knows how to do it in XAML, then that's fine. I can get to the main window using System.Windows.Application.Current.MainWindow. Is it possible from this to get a value that I can use to clip the popup? I'm assuming that if there is a value that I can use, then I would be able to bind the clipping of the popup to that value. This is really not necessary since after the popup initially opens, if the window gets moved or resized, the popup closes. So I would really only need to clip the popup when it opens. The reason I would like to do this is because although I am using a popup, I don't want it to appear as a popup that exists outside of the window. FYI this is for a popup calendar for a custom datebox. Any ideas, as well as clarification of misconceptions that I may have, would be greatly appreciated.
Furthermore, the popup can be launched from a user control that is not directly on the Main Window. So in that case it would be easier to use a popup. As apposed to a UC inside the XAML
I know this is a year old post, but in case any others come here looking for answers... If you don't need the popup to be outside of your window, why use a popup at all? It'd be far easier to simply use a control in a canvas (for instance) and control it via its Visibility property. Then you'd automagically get your clipping.
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Is there a way to make an entire WPF Window inert after a button click?
The window is invoked via Window.ShowDialog() and after use, the window is no longer needed for interaction but I leave it open to remind the user of the inputs in TextBox's, ListBox's, and give visual feedback via OxyPlot and so on. I leave it to the user to close the window manually.
One solution is to disable all buttons but that's tedious and it still leaves TextBox's functioning. That's not optimal because for anything to be functioning creates the wrong impression that the Window remains for anything other than looking at. It would be better for every control to be non-functioning by a single setting.
I did it by putting a name on the WPF window code behind and then setting .IsEnabled false upon the appropriate button click. All buttons, combo boxes, text boxes, and even OxyPlot became inert at that point and most parts were greyed out.
Consider creating a dedicated boolean dependency property in your code-behind or viewmodel and binding IsEnabled of every TextBox to the property.
I'm making a custom dropdown button (since the one included in wpf requires too much hacking to style right). Now that i got the button bit out of the way i need to add the drop down part.
My first thought was to add a stackpanel and use that to contain the items but it gets cut off if it leaves the borders of the grid that the button is in. Next up was the popup primitive, it gets on top of everything nicely enough but position wise it just free floats and i haven't figured out how to make it follow the button it was spawned by. I also tried using contextmenu but that seems to have no positioning controls at all and just sits where the mouse made it..
Anyways wpf is a big package and I'm just getting into it, anybody know which direction i might find what I'm looking for?
Preferred approach normally is to use a Popup. You got two very important properties with a Popup
PlacementTarget and Placement
Setup a binding for PlacementTarget on the Popup to your custom Button and then use Placement to position the Popup accordingly w.r.t to the PlacementTarget(Button)
Placement accepts an enum of type PlacementMode which gives you quite a few options to position the Popup.
I have a window with a popup that pops when an item in a listview is double clicked.
It centers to the main window and looks really nice floating there.
The problem is when the user moves the main window or selects another program, and the popup floats on top of other stuff.
I would like to have something like a popup, meaning that it floats on top of other elements in the window, but sticks with the main window when it moves (stays centered), and doesn't float on top of other programs.
Can I make a popup act like this, or is there a better way to do it?
Popups will not move while the window is resized or moved. Because, Popups/Context menus are not the part of Visual Tree. You have to use Adorner for this. I will suggest to read this four part series for a quick start on Adorner.
It's possible that an Adorner will fit your needs in this case better than a popup. Adorners can float above your window, too. There are a few differences, mainly that an adorner is bound to a UIElement (which include windows).
If you are willing to use a third-party/open source (MS-PL) option, the Extended WPF Toolkit has a ChildWindow control.
It's technically not a separate window, but it appears to be a separate window to the user.
I have not found a way to make Popups stop doing that in WPF
As an alternative, you can create a UserControl which acts like a Popup.
Usually I host the content section of the app along with the Popup within a Canvas control, and when IsPopupOpen gets changed to True I set the popup Visibility = Visible.
This is a sort of extension of this question I asked yesterday (the question gave me a contentcontrol that can overlay the current control). I now have a contentcontrol that can be overlayed on the current control via bindings (a modal type window). This works well and I am happy with this. One great feature would be if I could get the overlay to go over its parent.
currently the overlay will go into "My Control" control. What I would like is if I can still define it in that control (as that is were it is needed), but when it is displayed it can cover the whole main content area and / or the main window.
is this even possible?
Thanks
Sure it's possible, just wrap it into a Popup! :) You might have to manually stretch it though, but Popup is the control which will let you go outside the bounds of the parent view.
Another way is to host the MainContent in a grid and add a collapsed content control after the MainContent.
To show the popup: put it in the collapsed content control and make it visible.
To hide the popup: collapse the contentn control and remove the popup.
I am hosting windowsforms control in WPF popup. Problems below:
If i make StaysOpen=False i can't interact with winform control. StaysOpen to false is required because when clicked outsidet the Popup region, it should close.
if i make StaysOpen=True i can interact with winform control but when i click outside the area of popup, it is not getting closed.
I tried setting StaysOpen=true in MouseEnter of popup and StaysOpen=False in MouseLeave, but MouseLeave fires as and when mouse is over winform control resulting in unexpected behaviour.
I even tried IsMouseCaptureWithin property of popup and found it does not work with winforms (i guess its a bug in framework).
Another problem, i was trying to close popup when root main form (which is windows form) is deactivated (pressed Alt+Tab), but this event (deactivate) is fired even when i enter into one of the controls in windowshostControl in popup.
Desired Behaviour:
should be able to host and interact with winform control in wpf popup.
on clicking on outside the area of popup, popup should close.
Appreciate any inputs.
Thanks.
I've had many problems with the defacto-standard popups in WPF, because they are in fact a new window with their own handle. This means if you drag your application around the screen, the popup stays put (it doesn't move with your window). It also means your popup has some strange behaviors and doesn't interact with your application in ways other controls normally do.
I've created 2 decorator classes to address this problem:
PopupDecorator.cs and
TimeoutPopupDecorator.cs
It's pretty simple to use:
Add a namespace declaration for the new popup classes. i.e.
xmlns:dday_wpf="clr-namespace:DDay.WPF"
Surround the area you want the popup to be able to be displayed with the decorator. i.e.
<dday_wpf:PopupDecorator x:Name="popup">
<dday_wpf:PopupDecorator.Popup>
... contents of popup go here ...
</dday_wpf:PopupDecorator.Popup>
... contents of panel go here ...
</dday_wpf:PopupDecorator>
It works pretty much identically to a normal Popup from that moment on.
This may not solve all your problems, but hopefully it helps.
This sounds a bit like my problem launching a modeless winform control from a WPF form.
Check out my question Why is my WPF textbox "kinda" readonly?.
The just being, based on what Doug said about popups being a window with its own handle, makes this applicable.