I have a window that opens another window. I want that when this window it's opened i can't do anything on the parent window. (I'm not allowed to click buttons for example)
How I can do that?
Thanks.
You need to call the ShowDialog method instead of Show to show the second window as a modal dialog.
You want a modal window instead of a modeless window. A modal window means that the parent window is not usable while the child window is open.
You can open a modal window with ShowDialog.
You can open a modeless window with just Show.
I Recommend you to use MDI scenario behaving as child and parent windows but for instance according to the point you can use code below.
NewWindow.ShowDialog() method instead of NewWindow.Show() as it will disable background window
but that's not good practice we should implement MDI.
I've never seen a desktop application opening on multiple windows and disabling older ones.
Related
I was wondering if there is a window property, for a wpf application, that disables any actions outside of the window. For example, when you open a message dialog and click outside of it, the message dialog background flashes. Kind of saying you can't do any actions outside of the message dialog untill you click the 'OK' button. I want that implemented in some windows that I open in a program i'm developing but can't seem to find any info on it. Looking for ways on how i might approach this.
Try ShowDialog() instead of Show()
Opens a window and returns only when the newly opened window is closed.
Window childWindow = new Window();
childWindow.ShowDialog();
Note that it will prevent clicks only on parent window(s). Clicks on other applications or Desktop can't be prevented by the Dialog.
GoodDay, Here i want to minimize the WPF Window, While user clicking outside of the window.
I can easily minimize the window by this code
mywindow.WindowState= WindowState.Minimized;
but i want minimize the window at the time of clicking outside of the window.
i searched about that. But i can only got the output of various events like, FocusChanged,MouseMove,MouseDown like that. those are not solve my issue
You could use the Deactivatedevent. Have a look at the MSDN for further information.
A window is deactivated (becomes a background window) when:
A user switches to another window in the current application.
A user switches to the window in another application by using ALT+TAB or by using Task Manager.
A user clicks the taskbar button for a window in another application.
I want to create a gadget. when opening windows they appear on the shell tray as:
how can I prevent a window from showing on that tray. I already know how to send a window to the back to make it appear as a gadget. I found that example in here. It will be nice if that menu does not show up meanwhile the window is active and open.
Use the Window property ShowInTaskbar to restrict or allow your Window to appear in the taskbar.
Suppose, I have the following task.
There is a main application form with numerous buttons; when you click on each of these buttons, you get one more form. The second click on the button should close the opened form.
These forms should not be shown in taskbar, because they are auxiliary. They should not be dialog, because that will block the main application form and prevent user from performing some other operations with the main window or with other forms like the one that is opened. They should be shown above the main form, but not above other windows (so TopMost doesn't suite). When such forms are closed, the main form should be notified, and when the main form is minimized, they should be minimized as well.
How would you solve this problem?
The current solution is based on using hooks. It's not very easy to understand and very difficult to maintain (mainly because I am not experienced in win32). It works fine for about 90% of situations, but in 10% it doesn't.
Maybe, the requirements to forms behavior are to strict?
I would recomment using some window-manager, so each button will tell the window-manager to toggle visibility of form X, if X is not there it will be shown, if it is, it will be closed.
You should be able to configure the windows such that they will not show up in the taskbar.
For the visibility, I am not sure what you mean. When you open a form via a button, it will usually go to front, which should be ok. If you switch the window then, what do you expect? Should the main window always stay in the background or is it allowed to come to the front when focused?
Whenever I have seen applications change such standard behaviors, they failed in some way. Either wrong windows showed up or some were not accessible anymore or the user was just confused because these windows didn't act like all other windows.
It's not a problem. Use the Show(owner) overload to display the form.
An owned form is always on top of its owner. It minimizes automatically when you minimize the main window. No need for ShowInTaskbar. Another window model supported by winforms is MDI, check out the MdiParent property. The child windows are confined inside the bounds of the main window. Also consider using UserControls instead of a form, you can swap them in and out as needed. Or a tabbed interface, using TabControl. Weifenluo's DockPanel suite is a very popular implementation of the Visual Studio style windowing model, supporting windows that can be docked and floating within the main window. Plenty of choices here :)
Here's how most of your requirements can be accomplished:
Set the Owner of each child Form to be the Main Form.
MSDN Quote:
When a form is owned by another form,
it is closed or hidden with the owner
form. For example, consider a form
named Form2 that is owned by a form
named Form1. If Form1 is closed or
minimized, Form2 is also closed or
hidden. Owned forms are also never
displayed behind their owner form. You
can use owned forms for windows such
as find and replace windows, which
should not disappear when the owner
form is selected. To determine the
forms that are owned by a parent form,
use the OwnedForms property.
For stoping a form from appearing in task bar you need to set the ShowInTaskBar property
I am using C# and WinForms to create UI of my application.
I have main window and dialog, which is shown modal to the main window. Dialog window is not shown in task bar. I go to another application and return back by clicking at the main window task bat icon. I can see locked main window but cannot see dialog unless I select it in Alt-Tab. This is confusing for an application user.
How can I ensure showing modal window in this situation? I can see similar but unfortunately unsolved question ALT+TAB in Vista activates main window instead of previously active child window which regards to Vista (and I have Windows 7).
This is probably because you don't use the ShowDialog(owner) overload. You should fret a little bit about the exact reason that ShowDialog() cannot find an owner by itself and picked the desktop window instead. It isn't healthy. I cannot guess why from your post. See what explicitly setting the owner buys you.
Oh, this will happen when the dialog runs on its own thread. In which case ShowDialog(owner) is going to bomb.
It sounds like your dialog is not properly owned by the main window. Make sure you have assigned the main window to the dialog object's Owner property before showing the modal dialog.