Help me about Code C# hotkey

Help me about Code C#
I want code c#
Examble

private void Form1_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.F5)
{

timer1.Start();

>>>>i want code is Press F5 time1.Start
press F5 again >>> timer1.Stop
Help me Plese

Originally Posted by it-ty

Help me about Code C#
I want code c#
Examble

private void Form1_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.F5)
{

timer1.Start();

>>>>i want code is Press F5 time1.Start
press F5 again >>> timer1.Stop
Help me Plese

This would mean that the user would have the From1 active. Else the KeyDown won't be registered.

Many people uses:

Code:

[DllImport("user32.dll")]
static extern bool GetAsyncKeyState(System.Windows.Forms.Keys vKey);

To check if a key is pressed, within a timer.

Like: (Timer_Tick() is just because I don't remember the object and args)

Code:

Timer_Tick()
{
if(GetAsyncKeyState(Keys.F5))
     Timer1.Start();
}

private void Form1_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.F5)
{

timer1.Start();
}
else
{
timer1.Stop();
}
}
^^^^Code not work
I want code is press F5 first >>timer1.Start();
press F5 again >>>timer1.Stop();

Originally Posted by Jorndel

This would mean that the user would have the From1 active. Else the KeyDown won't be registered.

Many people uses:

Code:

[DllImport("user32.dll")]
static extern bool GetAsyncKeyState(System.Windows.Forms.Keys vKey);

To check if a key is pressed, within a timer.

Like: (Timer_Tick() is just because I don't remember the object and args)

Code:

Timer_Tick()
{
if(GetAsyncKeyState(Keys.F5))
     Timer1.Start();
}

I'd use a low level keyboard hook instead. But this would also work (you do need a higher interval between ticks).

Code:

private void Form1_KeyDown(object sender, KeyEventArgs e)
{
   if (e.KeyCode == Keys.F5)
   {
       if (timer1.Enabled)
           timer1.Stop();
       else
           timer1.Start();
   }
}

Originally Posted by Biesi

Code:

private void Form1_KeyDown(object sender, KeyEventArgs e)
{
   if (e.KeyCode == Keys.F5)
   {
       if (timer1.Enabled)
           timer1.Stop();
       else
           timer1.Start();
   }
}

Probably the easiest way...

Originally Posted by Biesi

Code:

private void Form1_KeyDown(object sender, KeyEventArgs e)
{
   if (e.KeyCode == Keys.F5)
   {
       if (timer1.Enabled)
           timer1.Stop();
       else
           timer1.Start();
   }
}

Wow! very Good Nice! Thank you
and I mod. new code is
if (e.KeyCode == Keys.F5)
{
if (timer1.Enabled)
{
label1.Text = "Off";
timer1.Stop();
}
else
{
timer1.Start();
label1.Text = "ON";
}
}
}

Thank you "Biesi"

Looks like you've already got the solution, but I have nothing better to do so I'll just contribute to this thread.

Code:

[System.Runtime.InteropServices.DllImport("User32.DLL")]
private static extern bool GetAsyncKeyState(Keys key);

private static System.Windows.Forms.Timer hotkeyTimer = new System.Windows.Forms.Timer();

public Main()
{
    hotkeyTimer.Tick += new EvenHandler(hotkeyTimer_Tick);
    hotkeyTimer.Interval = 1;
    hotkeyTimer.Start();
}

public void hotkeyTimer_Tick(System.Object sender, System.EventArgs e)
{
    if (GetAsyncKeyState(Keys.A))
    {
        //Do something when the A key is pressed
    }
}

Help me about Code C# hotkey

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