I am writing a Settings form for one of my applications. Once the user clicks Tool > Settings a new form comes up with the settings that can be changed.
The TopMost property is set the True and working properly.
What I can't seem to find how to do is to keep the Form on focus. I do not want the use to be able to leave the form. The user has to close the form to continue using the application.
Thank you...
You are probably using Show() to show the settings form. Instead, use ShowDialog().
http://msdn.microsoft.com/en-us/library/c7ykbedk.aspx
Display it like this:
FormChild1 Child = new FormChild1();
Child.ShowDialog(this);
Related
My main form is this
Now my problem occurs when I click Add -> Student, which is meant to bring up a new window that, instead it does this
So as you can see it opens the new form inside the same window. It didn't use to do this, then I made the main form an MdiContainer and set it as the MdiParent of the second form.
Is there a property I can change to make this new form pop up in a new window? Becuase I need to leave the MdiContainer property as True so that I can take data from Form2 and use it in Form1
Please let me know any other information you may need to help me fix this issue, as I'm not sure what caused it so I don't know what to change in order to fix it or even where I'm meant to be looking
you need to hide form enroll
when you open add window add.show()
you need to hide enroll form enroll.hide()
I have a GMap.NET control on my main form, and then I have a second form that will show when the user clicks on a button. The problem is, that when the user leaves the second window and hovers over the GMap control from the main form, the main form comes to the front. This does not happen when i hover over the rest of the main window with the second window on the front. Also I have another form that will show while the program searches for some data, and this one will also disappear when the user hovers over the map.
I hope I explained it well enough, basically when I hover over the map the main window comes to the front. And it does only happen when there is another form of my project in front of it, not when there is any other window like firefox or something in the front.
So my question is: why does this happen and can I change this behavior? Is it a standard of the GMap.NET control? I am using the Version 1.7.0.0 control btw.
you must use
GMap1.DisableFocusOnMouseEnter = true;
i added this code to my program and problem solved.
It would help to see some code as to how you are showing the forms, but it sounds like you are doing something like secondwindow.Show() instead of secondwindow.ShowDialog(), and then an event from GMap for OnEnter is doing a Focus().
Then, when you have the "other form" in front of it, it's opened in a way that will restrict access to the parent form (ShowDialog(), etc).
I want a form to be shown modal every time it is opend. Since I can not change the way it is created and opend. I wondered if it is possible to make the form stay on top from within the forms class.
One opportunity is the TopMost property. This works in general, but if I display the form while the main thread is waiting for it to close, the form will stay on top even if I change the application(to a browser for example). So no matter where I am, the form is still displayed.
Another issue which I came across is that in some cases it is adopted by the parent form which then might block other windows or popup messages.
I was thinking about a hook to the OnLostFocus event to get it on top again, once the focus is lost, but I'm not sure if that is a good idea ...
Any helpful thoughts about it?
Edit
Due to the comments I will extend my description, Here is the real use-case
We are using the Devexpress's SplashScreenManager which is able to show a certain form as a WaitForm. Since the WaitForm is not intended to be shown modal(see on the Support Center), we are looking for a way to do so.
We can not change the way the form is shown, because this is done through the SplashScreenManager. The WaitForm is shown both from the main thread, as well as from certain backgroundworker.
So this is only about an own form of ourselfs, displaying it within our own application.
Use:
TopLevel = true;
This will do exactly what you want; be topmost as long as the main form is shown and hide if the mainform is hidden by another window.
You can set the owner of your splash form to your main form explicitly without using .Show(owner).
splashForm.Owner=mainForm;
splashManager.Show(splashForm);
We did not want the TopMost property since it works on windows level and covers other windows too (for example the browser).
In the end I hooked up on the focus event of the window to make sure the window is always on top.
I was wondering if there are any gotchas for making a form completely transparent (as opposed to hiding it). For instance, I know that these are things that got my by surprise when hiding a form:
If a form is hidden, you cannot interact with its controls (can't add HTML to a webbrowser control, can't push a button, etc.)
Changing the WindowState (minimized, maximized, etc) of a window while it is hidden will cause the window to appear outside the scope of your work area when the form is shown again.
Has anybody run into similar problems (or completely different ones!) while using a form with opacity set to 0 (completely transparent)?
If you don't need the form anymore, hide it.
But if you still have a task or timers running in the form you want to keep, or you want to keep the user's input, then you'd do good to set the opacity to 0%.
This is what I do when I want a form to be hidden, but still active:
frmMain.Opacity = 0; // To make it invisible.
frmMain.VisibleInTaskbar = false; // To make the taskbar entry of the form disappear, and to make sure that the WindowState isn't changed.
frmMain.Enabled = false; // To make sure the user doesn't type something in the form, or presses a button (by pressing enter) by accident.
From the up votes for my comment, I guess I'll submit it as an answer. I would discourage using Form.Opacity = 0. Even though you can disable the form to prevent accidental interaction, I would think the transparent form would overlay other windows and confuse the user as to why he can't interact with windows behind your transparent one.
As for the gotcha's for Form.Hide(), I typically queue form responses so that when the form returns into view (or visibility), it goes through the queue to process actions (i.e. changing FormState). Changing the form while it's hidden can also really confuse the user.
I have a requirement where the user wants to be able to click a button to show a dialog with some information. They want the ability to move the dialog off of the form and put focus back on the calling form and make changes to the calling form with the dialog still open.
It is basically a map on the main form and the dialog is a map legend.
Is this possible? How would I accomplish this task? It seems like I would need to do something with a panel like how Visual Studio does this with their dockable panels.
Call the Show method instead of ShowDialog.
This method is a non-blocking call (unlike ShowDialog, it will return immediately, not after the new form closes) and will not show the form modally.
You'll probably want to pass the parent form as the parameter so that it will show as a child form.
You can show the dialog in non-modal way.
Like this:
formLegend.Show();
Insead of calling legendForm.ShowDialog(), just use legendForm.Show(). It will display the legend form without restricting the map's usage.