Taking it a bit further than hosting WinForms user controls in my WPF application, I am actually hosting Delphi forms, i.e. top level windows. I am doing so through the voodoo in blog post How To Host Top-Level HWNDs In WPF.
Nearly everything works perfectly. I send a COM server, built in Delphi, a menu path string, and it sends back a window handle, which I pass to the host control described in the blog. The Delphi window receives nearly all events (rather, Windows Messages) correctly, without any intervention on my part.
The only problem is the buttons. They receive a click event/message fine, and work, but now the Delphi guys have added new icons to the buttons, and each button has an active icon, a hover icon, and a click icon. They receive none of the messages they should to change these icons. Why do nearly all messages work except these? What can I read and or do to try and correct this?
In MouseOver event, send some user message and catch it.
WPF and Win32 Interoperation
HWNDs inside WPF > Notable Differences in Input behavior
While the mouse is over the HwndHost, your application does not receive WPF mouse events, and the value of the WPF property IsMouseOver will be false.
Related
I am needing to use the DotNetBrowserControl inside of another application (I am an add-in in the application). The application is written in WPF and has some WinForms components.
When I try to use the WPFBrowserView in the app I can never get focus to go into the Browser Window at all (even when clicking on a the google search box for example).
When I try to use the WinformsBrowserView inside of a WindowsFormsHost control I am able to get focus into the google search box by clicking on it. However once I click focus out of the browser control (to a WPF textbox for example) I can never get Keyboard focus back into the browser (even when clicking on a textbox in the browser).
It seams I am closest on getting the WInformsBrowserView working. Does anyone have any advice on how to force focus into the browser window? Even if I could programmatically force this to happen it would be a huge help.
We have implemented force focus feature for DotNetBrowser, but it is not yet present in the current version. We plan to add it to the next version of DotNetBrowser. If you need a build with this feature present, please get in touch with us via DotNetBrowser support email, and we will provide you with a preview build.
First things first, this problem only happens while working in Citrix XenApp seamless mode (which, in simplest of words means the actual app is running on some citrix host but it is simulated as residing in your own desktop). I will take this up with Citrix Support as well but just wanted to poll the group in case someone faced a problem like this before.
I have a WPF app which uses Winforms NotifyIcon to reside in system tray until mouse clicked. In Citrix seamless mode, as user clicks the icon in system tray, the popup flashes and immediately closes on its own.
The Popup window is a vanilla one created with StaysOpen as FALSE and same works in every other environment.
Any suggestions ? This is what I've noticed so far:
The window stays open if I use StaysOpen as true. But then I don't have a way to close the window manually when it loses focus. LostFocus Event doesn't get fired on popup when user clicks outside.
In citrix seamless mode, the MouseEnter event is captured but MouseLeave is NOT so the approach of closing the window if user mouse is outside the window for X secs is not achievable.
Tried the workaround of starting the popup with Staysopen as FALSE and then reset staysopen after like 2 secs so that the pop sticks. It works but a soon as I set StaysOpen as FALSE once the timer is hit, the pop up closes on its own.
Without all these workarounds, if a user quickly clicks (leftclick) on the window before it disappears, the pop up sticks so I tried few ways to simulate the mouse click on the popup as it opens up but that doesn't cut it either.
Thanks
I can't help you with specific advice for tweaking your app to work around the issue, however there is always the hit it very hard with a hammer approach, i.e. tell consumers of your app to disable seamless for your application:
http://support.citrix.com/article/CTX116357/
Update: I pinged the original seamless dev - he said it sounds like a bug where seamless is not correctly routing all the necessary mouse messages between client and server. He said the best way to diagnose this was to run the Spy++ tool on the XenApp server and on the client, and then compare the messages each side sees to identify what messages are not getting translated. Since it sounds like a genuine bug, your best bet is to raise a support ticket with Citrix support and provide them with a sample app that can repro the bug.
I'm working on an ActiveX control which is hosted in MFC and VB6 applications.
This ActiveX contains a WPF control, itself hosted by a WinForms ElementHost, i.e.:
MFC > .NET ActiveX > WinForms ElementHost > WPF UserControl
When an user right-clicks on the control, he must be able to navigate in the contextual menu using the keyboard arrow keys.
If my control has the focus when the right-click occurs, everything works fine.
But if the focus is in the host application when the user right-clicks, keyboard events continue to be sent to the host MFC application.
I tried to call the Focus() method on my WPF control when I detect the right click, but it doesn't work.
Does anybody have an idea ?
Thanks.
I have found a workaround.
When the PreviewMouseRightButtonDown event occurs on the WPF form, I call the Focus method on the WinForm host control.
I don't really understand why, but this lets users use their keyboards to navigate in the contextual menu.
I wouldlike to embed a webbrowser in a WPF application. The browser should look like a normal browser, with address bar, back and forward button and status bar. Is there a way how that could easily written in XAML, with a direct databinding of the address to a textbox, with a direct routing of events from the buttons to the webbrowser object, and the enabling back?
Why not?
Here and here are uploaded some screenshots from our application which has WebModule inside and is able to work like browser.
In our implementation we used Windows Forms WebBrowser control as browser engine and MVVM as communication pattern. Model has navigation commands (forward, back, ...) that raise proper events. View is handling this events and delegate requested actions to inner WebBrowser component. Additionally view is handling WebBrowser's events (NewWindow, DocumentCompleted, Navigating, Navigated) and setting up model's state.
Model and view together contain about 500 lines of code (I don't think it's very much, do you?).
Of course, I should mention, that due to using IE engine this browser could have some problems on complicated web-sites.
P.S. We didn't use System.Windows.Controls.WebBrowser because it does not provide access to NewWindow event.
P.P.S. I've posted this answer from browser in our WPF application. Good luck!
I have a hopefully trivial question. Currently, my company works with a rather obscure language (SyngergyDE) and we need to call a SilverLight application inside our product. Unfortunately, this obscure 3rd party language only (currently) supports the opening of WPF screens. So with that said, I thought I'd develop a small WPF user control that contains a "WebBrowser" control and navigate to the silverlight application's URI. This works fine, and I'm able to see the SL application. Here is my question - we have a "Close" button on the SL application, and when users "Click" that button, we want the window to close.
Does anyone have any suggestions on how we can communicate the "Closing of the SL App" to the WPF user control, so that the entire WPF user control closes as well?
Thanks everyone,
-Tom
Attach an event handler to the WebBrowser.Navigated event.
Have the close button in the Silverlight application use:-
HtmlPage.Window.Navigate(new Uri("about:blank", UriKind.Absolute));
When the Navigated event fires in WPF with the url "about:blank" then its time to close the control.
Use Javascript and the HTML DOM as the glue here.
For example, when the SL app close button is clicked, have Silverlight trigger some Javascript code that sets a flag, or alternately, raises some HTML document event.
The WPF control could poll that flag in the HTML + Javascript, or alternately listen for that HTML document event, then close the user control.