Hello,
i am lookinf for the best way to trap any alphanumeric keypress in all
multi key combminations and execute some code
For example , i have a form visible using the form.showdialog method,
then the user can press keys A, D, E, F, T, and C to peform a
function.
What i want is that if a user presses A, or a, or SHIFT A or CNTRL A
that it executes the same code, BUT NOT IF ALT A is pressed. The same
applies for the other letters.
I am overriding the processcmdkey function using the code bellow, and
it works, but not for ALL the multi key combo's i present above.
Can anyone help me on how to trap all the key combos i want listed
above
thanks for any help
Peted
#region ProcessCmdKey
protected override bool ProcessCmdKey(ref Message msg, Keys
keyData)
{
const int WM_KEYDOWN = 0x100;
const int WM_SYSKEYDOWN = 0x104;
if ((msg.Msg == WM_KEYDOWN) || (msg.Msg == WM_SYSKEYDOWN))
{
switch (keyData)
{
case Keys.Tab:
//Do something
return true;
break;
case Keys.F3:
//Do something
return true;
break;
case Keys.A:
//Do something
return true;
case Keys.D:
//Do something
return true;
case Keys.E:
//Do something
return true;
case Keys.F:
//Do something
return true;
case Keys.T:
//Do something
return true;
case Keys.C:
//Do something
return true;
}
}
return base.ProcessCmdKey(ref msg, keyData);
} 5 6107
On Sun, 06 Apr 2008 09:40:16 -0700, <Petedwrote:
i am lookinf for the best way to trap any alphanumeric keypress in all
multi key combminations and execute some code
For example , i have a form visible using the form.showdialog method,
then the user can press keys A, D, E, F, T, and C to peform a
function.
What i want is that if a user presses A, or a, or SHIFT A or CNTRL A
that it executes the same code, BUT NOT IF ALT A is pressed. The same
applies for the other letters.
I am overriding the processcmdkey function using the code bellow, and
it works, but not for ALL the multi key combo's i present above.
Why not? What happens? What did you expect to happen instead?
Pete
>I am overriding the processcmdkey function using the code bellow, and it works, but not for ALL the multi key combo's i present above.
Why not? What happens? What did you expect to happen instead?
Pressing A, D, E, F, T, and C keys on thier own works fine
Capslock and A, D, E, F, T, and C works fine
Shift and A, D, E, F, T, and C does not work
Control and A, D, E, F, T, and C does not work
Alt and A, D, E, F, T, and C does not work
(I have now decided i do want the alt key combo to also work)
So any idea how i can get mod the code to make it pick up all those
modifier and key press combo in addition to just pressing the relevant
letter ?
I want all those combos to execute the same code as the single
keypress
Any advice appreciated
thanks
Peted
Peted wrote:
>
Control and A, D, E, F, T, and C does not work
To capture Ctrl A separately, you would need
switch (keyData)
{
case (Keys.A | Keys.Control):
Keys combines the keys being pressed.
On Sun, 06 Apr 2008 18:39:37 -0700, <Petedwrote:
[...]
So any idea how i can get mod the code to make it pick up all those
modifier and key press combo in addition to just pressing the relevant
letter ?
Instead of "switch (keyData)" use "switch (keyData & Keys.KeyCode)". That
will filter out the modifier keys, leaving only the actual key pressed.
If you decide later that you want some modifier keys but not others, there
are a variety of ways you can check for that, but they all involve similar
techniques. That is, using the various mask constants in the Keys
enumeration to check specifically for modifiers.
Pete
Great, thanks heaps dude
Peted
>On Sun, 06 Apr 2008 18:39:37 -0700, <Petedwrote:
>[...] So any idea how i can get mod the code to make it pick up all those modifier and key press combo in addition to just pressing the relevant letter ?
Instead of "switch (keyData)" use "switch (keyData & Keys.KeyCode)". That will filter out the modifier keys, leaving only the actual key pressed.
If you decide later that you want some modifier keys but not others, there are a variety of ways you can check for that, but they all involve similar techniques. That is, using the various mask constants in the Keys enumeration to check specifically for modifiers.
Pete
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