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Intercept Paste on TextBox control

Hello all,

I am new to .NET and a i am moving from Delphi (finally!) to C#.
Now, i am trying to develop custom TextBox for numeric input. I have done it
almost, now i need to prevent paste so someone couldnt paste letters into
numeric text box. How this can be done in C#? In Delphi there was method to
implement methods wiht message code WM_PASTE, and within that method i could
control the contents of the pasted text.

Thanks.
Radovan
Nov 16 '05 #1
3 15299
To intercept messages in textbox control, derive a class from TexBox and
implement

protected override void WndProc(ref Message m)
{
case 0x302: //WM_PASTE
{
}
base.WndProc(re f m)
}

--
Shak
(Houston)


"Radovan Radic" <ra****@eunet.y u> wrote in message
news:ui******** ******@TK2MSFTN GP09.phx.gbl...
Hello all,

I am new to .NET and a i am moving from Delphi (finally!) to C#.
Now, i am trying to develop custom TextBox for numeric input. I have done it almost, now i need to prevent paste so someone couldnt paste letters into
numeric text box. How this can be done in C#? In Delphi there was method to implement methods wiht message code WM_PASTE, and within that method i could control the contents of the pasted text.

Thanks.
Radovan

Nov 16 '05 #2
To intercept messages in textbox control, derive a class from TexBox and
implement

protected override void WndProc(ref Message m)
{
switch(m.Msg)
{
case 0x302: //WM_PASTE
{
}
default:
base.WndProc(re f m)
}
}

--
Shak
(Houston)
"Radovan Radic" <ra****@eunet.y u> wrote in message
news:ui******** ******@TK2MSFTN GP09.phx.gbl...
Hello all,

I am new to .NET and a i am moving from Delphi (finally!) to C#.
Now, i am trying to develop custom TextBox for numeric input. I have done it almost, now i need to prevent paste so someone couldnt paste letters into
numeric text box. How this can be done in C#? In Delphi there was method to implement methods wiht message code WM_PASTE, and within that method i could control the contents of the pasted text.

Thanks.
Radovan

Nov 16 '05 #3
Thanx a lot Shakir, i appreciate your help.

Radovan

"Shakir Hussain" <sh**@fakedomai n.com> wrote in message
news:uC******** ******@TK2MSFTN GP11.phx.gbl...
To intercept messages in textbox control, derive a class from TexBox and
implement

protected override void WndProc(ref Message m)
{
switch(m.Msg)
{
case 0x302: //WM_PASTE
{
}
default:
base.WndProc(re f m)
}
}

--
Shak
(Houston)
"Radovan Radic" <ra****@eunet.y u> wrote in message
news:ui******** ******@TK2MSFTN GP09.phx.gbl...
Hello all,

I am new to .NET and a i am moving from Delphi (finally!) to C#.
Now, i am trying to develop custom TextBox for numeric input. I have done
it
almost, now i need to prevent paste so someone couldnt paste letters

into numeric text box. How this can be done in C#? In Delphi there was method

to
implement methods wiht message code WM_PASTE, and within that method i

could
control the contents of the pasted text.

Thanks.
Radovan


Nov 16 '05 #4

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