Hotkey Changing Button [Source Code]

I coded a Button that user can set hotkeys with it as he wishes.
How to use:

-Drag and Drop the HotkeyButton to form.
-Set Default Hotkey.

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So, just a button?
Could you explain what happens in the code behind?

Originally Posted by _NightWare

So, just a button?
Could you explain what happens in the code behind?

Each button has a property called "Hotkey" as Forms.Keys . You can use this property like this

Code:

GetaSyncKeyState(HotkeyButton1.Hotkey)

If you Hover the button, it's text changes to something like "Click to Change" (i am not in my computer now)
If you Click the button, it's text changes to "Hit a Key"
If you hit a key that key becomes new HotkeyButton1.Hotkey.

Look into RegisterHotKey function, it's a lot more useful.

GetAsyncKeyState is a bad idea as it may ignore two combined keys, RegisterHotkey too as you don't need to hook system keys.
I'd prefer this method, maybe a bit risky, by overriding the ProcessCmdKey method. It should works just with forms.

Code:

protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
        {
            if (keyData == Keys.A)
            {

                myButton.PerformClick();

                return true;

            }

            return base.ProcessCmdKey(ref msg, keyData); // return the base method to let process shortcuts or hotkeys you are not handling yourself
        }

if you need to handle more hotkeys, I suggest to do a switch case to make it more readable. You could make a wrapper for this if you are too lazy to handle the hotkeys yourself. Something like this should give you an idea:

Code:

using System.Windows.Forms;

class hotkeyButton : Button
{

    private Keys _hotkey;

    public Keys Hotkey
    {
        get { return _hotkey; }

        set 
        {
            if(_hotkey != value)
            {
               _hotkey = value;
            }
        }
    }

    protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
    {
        if (keyData == _hotkey)
        {

            this.PerformClick();

            return true;

        }

        return base.ProcessCmdKey(ref msg, keyData);
     }
}

build, go to the toolbox, put an hotkeyButton in your form, explore its properties, find the Hotkey property and select your favourite hotkey.

Hotkey Changing Button [Source Code]

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