Control a Winforms tooltip's location - winforms

Is there any way to control a tooltip's location on a Winform? I can handle the Popup event, but in the event handler I can only change the size, not the location. I could use the OnMouseEnter/Leave events of the control to manually show a tooltip, but then I lose the benefits of the AutomaticDelay property of a normal tooltip.

The ToolTip.Show method has some overloads that allow this. Check it out.

Related

How to make an input-popup (popup dialog) in WPF?

my wish is to get some kind of "popup" as an input dialog. I really need no big window, just a few TextBoxes.
I tried this with the WPF-Popup till i recognized it's not built for this kind of use.
Here is how it looked like:
http://imgur.com/rWjyMHg
Why i like popup?
doesnt lock screen
no own window
disappears by clicking elsewhere
So how is the best way to achive the same behavior?
My approaches and problems:
Popup: I get no LostFocus event so the TextBoxes won't trigger
updateSourceTrigger (cannot use propertyChanged, because i need converters)
Canvas with Visibility: Z-Index is not possible because the control
is in a DataGrid which overlays the canvas.
Maybe i could try one global canvas in my window and re-use it for the cells, but if i need sometime another kind of popup i cannot re-use this. So the best way would be each cell can open it's own popup (input).
thx in advance

WPF: Controlling focus in a custom control

I am developing a custom control (say BoxControl) which will have many controls in it like a textbox, few buttons etc.
I will have many BoxControls in a row and while navigating via tabs, I want it to behave like when a BoxControl gets focus, it always passes the focus to its textbox and when its textbox loses the focus, the entire BoxControl loses the focu and passes the focus to next BoxControl.
Any ideas how can it be done?
You will need to add an event handler to your BoxControl to handle the GotFocus event and then put the focus on its text box.
You will need also to add an event handler to the LostFocus event of the textbox and then you can raise a custom event on BoxControl so it's controller can know that has to pass the focus to the next BoxControl
Hope it helps.
You can set Focusable property to false by a Setter in your custom control's template. Both on the control and on the various elements inside.

MouseLeave of underlying object is fired even when overlapping object is IsHitTestVisible = false

I have created a custom popup to decorate my buttons with animated tooltips. I track Button.MouseEnter for the button to decide when to display the popup. I use Button.MouseLeave to determine when to hide the popup.
Problem is Button.MouseLeave is fired prematurely if the popup moves over the mouse cursor (its appearance is animated) despite the fact that I have set IsHitTestVisible = false for the popup and all its visual children.
Is this the way WPF is designed to work? I need MouseLeave to only fire when the cursor moves away from the button itself and not be influenced by the popup.
Thanks
I believe that the Popup control is actually contained within a window, which is why the popup can extend beyond the window bounds in some cases. (It's also why popup transparency is not supported in Silverlight.)
I believe that while the popup control is no longer processing "hits", the container window is, which is why you are losing your button's mouse focus.
I've not tested this, but you might try creating a template for your button and actually declaring the popup as part of the button (rather than below it). This may cause WPF to view the popup control as part of the button and eliminate the problem of losing mouse focus. This works in other scenarios, but I'm not 100% sure how this will work with a Popup.
EDIT: As a side note, the deault WPF tooltip allows you to override the template. I'm not sure what your goals are, but you may find it easier to change the appearance and behavior of the default tooltip than to try to roll your own, as a lot of these sorts of problems have already been solved in the default Tooltip.

Custom event for wpf UIElement

Is is possible to fire event when a UIElement's location is changed in wpf? We can fire location changed event in case of Windows but can we have a custom event which fires when a UIElement's location is changed in the Window.
It's not possible for the general case. The UIElement doesn't even know the location it's rendered to.
You can do it for particular cases, though. You can use events of the layout parent, like the Left and Top attached property of the Canvas, the scroll offset of a ScrollViewer, etc., depending on where your UIElement is in the visual tree.
Maybe this link will help you, UIElement supports a lot of Events. I think what you are looking for are Manipulation Events or the LayoutUpdate Event.
MSDN UIElement Class

How can I get WPF binding to occur on controls which have not yet been shown?

I have a custom text box control which raises a routed event when its TEXT property changes. This text property is data bound to a property on our view-model object.
When I place this control on a TabControl page or Expander control, it appears as if data binding only occurs when the control becomes visible for the first time, therefore I never receive any of the routed events until I swap to the tab the control is on or expand the expander.
Is there any way I can force data binding to occur before the control is shown?
Sounds like you relying on the data binding to genreate the routed event is the wrong approach. Instead you need to have your Model or ViewModel generate an event when the text is modified and then you watch this event from an appropriate place in your View.
Not very likely. WPF is a fairly efficient framework and won't do any work that it doesn't absolutely have to. This includes scenarios like data binding. Why bother exercising a collection for a control that might not ever be shown?

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