Setting hotkey of textbox - Printable Version

Setting hotkey of textbox - Printable Version

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+--- Thread: Setting hotkey of textbox (/Thread-Setting-hotkey-of-textbox)

Setting hotkey of textbox - absde20 - 03-17-2013

how can set keys Through textbox Like This

Code:
Protected Overrides Function ProcessCmdKey(ByRef msg As Message, ByVal keyData As Keys) As Boolean
        If keyData = (TextBox1.Text) Then
            Label1.Text = TextBox1.Text
        End If
    End Function

it is work when add code

Code:
Protected Overrides Function ProcessCmdKey(ByRef msg As Message, ByVal keyData As Keys) As Boolean
        If keyData = (Keys.A) Then
            Label1.Text = TextBox1.Text
        End If
    End Function

but if i need change it from application i will need to write name button in textbox
so how i can do this any one have a idea !

-Thread title changed by Moderator

RE: Any One can help me here ! - Coder-san - 03-17-2013

I have no idea what you just said there^

RE: Any One can help me here ! - Linuxephus™ - 03-18-2013

It's precisely 10:57pm EST here Stateside.
As such, that's roughly 1 hour before my brain goes into Brain Dead Mode as is customary at said time.
Thus will I translate the above for you on the morrow...or maybe the morrow after the morrow.

RE: Any One can help me here ! - absde20 - 03-18-2013

(03-17-2013, 11:12 PM)Coder-san Wrote: I have no idea what you just said there^

ok
i mean how can set hot key of textbox

(03-18-2013, 03:59 AM)Linuxephus Wrote: It's precisely 10:57pm EST here Stateside.
As such, that's roughly 1 hour before my brain goes into Brain Dead Mode as is customary at said time.
Thus will I translate the above for you on the morrow...or maybe the morrow after the morrow.

:angel:

RE: Setting hotkey of textbox - ArkPhaze - 03-19-2013

Use the PreviewKeyDown event, because it happens beforehand...

C#, but easily, you should be able to see what i'm doing with this:

Code:
void Form1_PreviewKeyDown(object sender, PreviewKeyDownEventArgs e)
{
	if (e.KeyData == Keys.A)
	{
		// Do something?
	}
}

http://msdn.microsoft.com/en-us/library/system.windows.forms.control.previewkeydown.aspx

MSDN Wrote:Occurs before the KeyDown event when a key is pressed while focus is on this control.

Read the Remarks as it is important, and look at the example code with the VB tab selected to view the VB.NET version.

If you want to use a Key event, there's KeyDown and KeyUp as well, but I would highly recommend KeyUp over the KeyDown, and for a few reasons.

RE: Setting hotkey of textbox - RA1N - 03-20-2013

orrrrr....

Code:
Public Declare Function GetAsyncKeyState Lib "user32" (ByVal vkey As Integer) As Short

Code:
Public Function GetKeyState(ByVal key As Integer) As Boolean
        Dim s As Short
        s = GetAsyncKeyState(key)
        If s = 0 Then Return False
        Return True
    End Function

Code:
If GetKeyState(Keys.*) = True Then 
'put this if statement in a thread to run through to keep a check on it.
End If

This way it checks through out the whole time while running the program for a hotkey.

RE: Setting hotkey of textbox - ArkPhaze - 03-20-2013

(03-20-2013, 01:22 AM)RA1N Wrote: orrrrr....

Code:
Public Declare Function GetAsyncKeyState Lib "user32" (ByVal vkey As Integer) As Short
Code:
Public Function GetKeyState(ByVal key As Integer) As Boolean Dim s As Short s = GetAsyncKeyState(key) If s = 0 Then Return False Return True End Function
Code:
If GetKeyState(Keys.*) = True Then 'put this if statement in a thread to run through to keep a check on it. End If

This way it checks through out the whole time while running the program for a hotkey.

Perhaps, but you have to call it multiple times to make sure that it hits the time a user presses a key because it's not based on events. He wanted a hotkey for specifically a textbox as I read it. If you wanted a global system-wide hotkey, you could do it this way, but it is a very poor way, and it uses a lot of resources because it has to be called constantly.

There's much better ways, even avoiding this, and a keyboard hook, but a keyboard hook is the ultimate way in my opinion, because you don't have to register and unregister a specific hotkey that may already be taken by something else.