This question already has answers here:
How to set hotkeys for a Windows Forms form
(8 answers)
Closed 8 years ago.
Currently I want to add a hotkey to my button in C# windows application.
I went to the event, I didn't see anywhere I can assign hotkeys.
I wanna assign "F6' as the hotkey, which means whenever I press F6 it would trigger the button and run the code in it
You could try to handle the Forms Keypress-event (and route all components keypress-events to that)
Assigning hotkeys via the GUI works just for MenuItems, if I'm not mistaken.
Edit: some code:
private void Form1_KeyUp(object sender, KeyEventArgs e)
{
if (e.KeyData == Keys.F6)
button1_Click(this, new EventArgs());
}
Just what I quickly tried. If you register to the forms (or any other controls for that matter) KeyUp-event, you can query the released key and act accordingly. I suppose there are more elegant ways to do this, but this should get you started.
Related
This question already has answers here:
Best way to implement keyboard shortcuts in a Windows Forms application?
(9 answers)
Closed 7 years ago.
I would need that (on a WinForm) if the key A is pressed, an event is triggered.
I got this code from the MSDN site:
private void Form1_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode != Keys.A)
{
MessageBox.Show("Key 'a' was pressed.");
}
}
The problem is that this code doesn't work for me, there is no error message, but if I am on the form and press the key A there is no event triggered. I tried to use breakpoints, but it never enters the if.
What is the problem here?
You need to set Form.KeyPreview property to True. This property gets or sets a value indicating whether the form will receive key events before the event is passed to the control that has focus.
Also note that there is a mistake in your code; according to your message you need to verify if e.KeyCode == Keys.A.
This question already has answers here:
Panel not getting focus
(6 answers)
Closed 7 years ago.
I have got some controls on the Panel and I am trying to delete them using "Delete" button. I handled KeyPress Event as mentioned in How to get Keypress event in Windows Panel control in C#
and I am getting Event for buttons (A-Z and 1-9) pressed, but not for the Delete, Control/Alt/ Shift or F1, F2.... buttons.
Do we need to do something special for handling these buttons?
Try like this:
private void Window_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Delete)
{
e.Handled = true;
}
}
Also you need to set KeyPreview on.
You can also refer Keyboard.Modifiers Property
This question already has answers here:
C# Windows Forms code not working - Attach Event to button
(2 answers)
Forms not responding to KeyDown events
(3 answers)
Closed 7 years ago.
It is my second day doing c#...don't judge please. I have read other threads but they did not help.
I have this code:
private void listView1_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Delete)
{
MessageBox.Show("aa");
}
}
which is not working.
What am I doing wrong?
The issue is that you haven't told the ListView to actually use the event. To do this you have to assign the method to the required event. there are two ways to do this. Either select the ListView and open the Properties tab go to events and double click on the one you want. (Visual studio will automatically put the event out for you). Or in the constructor of the form or elsewhere you can manually assign it. In your case it would look like...
listView1.KeyDown += listView1_KeyDown;
Note you don't have to use a name similar to what visual studio would automatically produce. You can name your method whatever you want as long as the method signature matches the event. This is nice if you have multiple list boxes and want to use the same method to handle all of them. For example you could do something like.
listView2.KeyDown += listView1_KeyDown;
I suggest reading up on how events work in c#.
This question already has answers here:
Closed 11 years ago.
Possible Duplicate:
Global keyboard capture in C# application
Hi all,
I am making a .NET application (Window Forms) which is written by C# and I get a problem. How to hide my personal .NET application using a keyboard shortcut and then displaying it back from same keyboard shortcut.
Thanks !
First you should probably clarify which technology you're using: WinForms, WPF?
Anyway, using WinForms You can use the KeyDown event to process such occurrences:
private void OnKeyDown(object sender, System.Windows.Forms.KeyEventArgs e)
{
if (e.Shift && e.KeyCode == Keys.M)
{
WindowState = FormWindowState.Minimized;
}
}
Note that the modifier key/s and regular key/s you require to be pressed to carry out the action are obviously changeable.
A further note is that once this action has been executed then the window no longer has 'focus' and so repeating the keystrokes to display the window again will not work - for this to happen you will need to register a hot-key that Windows itself knows about or use a keyboard hook to intercept keystroke input to the system to consume in your application, AFAIK.
This is probably a simple question but i've been unable to find a quick answer.
I have a WPF application which has a Windows Forms Control hosting a GeckoFX component (doesn't really matter).
What i want to do is capture key down events inside the Windows Forms Control and grab focus of a WPF control for some particular key combination.
And what if i want to capture events from the entire WPF application window (even inside the Windows Forms Control)?
I tried handling the KeyDown event and PreviewKeyDown event but to no avail.
What i want to know is if this is possible and how this should be done. I can post some code if required.
The KeyDown even on the Form should work for non special keys (like arrow keys). Use PreviewKeyDown to capture those, or use this solution.
For GeckoWebBrowser specifically, I had to use PreviewKeyDown. Also, I added a line so it doesn't break in design mode:
private void webBrowser1_PreviewKeyDown(object sender, PreviewKeyDownEventArgs e) {
if (DesignMode) return;
if (!e.IsInputKey && e.Control && e.KeyCode == Keys.S) {
DoStuff();
return;
}
}