How to prevent flickering when set focus on all controls.

[Vern]

I have a routine that sets focus to all the controls on the form so it can
run the validate event for each of them.
Is there a way to prevent the user from seeing the cursor go through all the
fields?
Thanks,
Vern

[Angel J. Hernández M.]

You should try using the HideCaret and ShowCaret function (API)

Regards,
--
Angel J. Hernández M.
MCP - MCAD - MCSD - MCDBA
http://groups.msn.com/desarrolladoresmiranda
http://www.consein.com
"Vern" <Ve**@discussions.microsoft.com> wrote in message
news:1A**********************************@microsof t.com...

I have a routine that sets focus to all the controls on the form so it can
run the validate event for each of them.
Is there a way to prevent the user from seeing the cursor go through all
the
fields?
Thanks,
Vern

[Vern]

That worked, thanks!

Here's the C# Code I used for this.

using System.Runtime.InteropServices;
public class MyCaret
{

[DllImport("user32.dll")]
public static extern int ShowCaret(IntPtr hwnd);

[DllImport("user32.dll")]
public static extern int HideCaret(IntPtr hwnd);
}

Then in my actual method that needed to hide the caret, I used:
MyCaret.HideCaret(CurrentForm.Handle);
MyCaret.ShowCaret(CurrentForm.Handle);

"Angel J. Hernández M." wrote:

You should try using the HideCaret and ShowCaret function (API)

Regards,
--
Angel J. Hernández M.
MCP - MCAD - MCSD - MCDBA
http://groups.msn.com/desarrolladoresmiranda
http://www.consein.com
"Vern" <Ve**@discussions.microsoft.com> wrote in message
news:1A**********************************@microsof t.com...

I have a routine that sets focus to all the controls on the form so it can
run the validate event for each of them.
Is there a way to prevent the user from seeing the cursor go through all
the
fields?
Thanks,
Vern

[Angel J. Hernández M.]

Excellent!

Regards,
--
Angel J. Hernández M.
MCP - MCAD - MCSD - MCDBA
http://groups.msn.com/desarrolladoresmiranda
http://www.consein.com
"Vern" <Ve**@discussions.microsoft.com> wrote in message
news:83**********************************@microsof t.com...

That worked, thanks!

Here's the C# Code I used for this.

using System.Runtime.InteropServices;
public class MyCaret
{

[DllImport("user32.dll")]
public static extern int ShowCaret(IntPtr hwnd);

[DllImport("user32.dll")]
public static extern int HideCaret(IntPtr hwnd);
}

Then in my actual method that needed to hide the caret, I used:
MyCaret.HideCaret(CurrentForm.Handle);
MyCaret.ShowCaret(CurrentForm.Handle);

"Angel J. Hernández M." wrote:

You should try using the HideCaret and ShowCaret function (API)

Regards,
--
Angel J. Hernández M.
MCP - MCAD - MCSD - MCDBA
http://groups.msn.com/desarrolladoresmiranda
http://www.consein.com
"Vern" <Ve**@discussions.microsoft.com> wrote in message
news:1A**********************************@microsof t.com...

>I have a routine that sets focus to all the controls on the form so it
>can
> run the validate event for each of them.
> Is there a way to prevent the user from seeing the cursor go through
> all
> the
> fields?
> Thanks,
> Vern

[Raj Chudasama]

Hi
sorry but i do not quite get the concept of this class.

how do i use it?

I have a button (derived from the usercontrol).
i use it 12 times on a form. On each of this buttons i place images for
various mouse events
i.e hover, leave, up, down, click. (so images change with each event). This
is causing quite a bit of flickers. so i used the code like this

private void btn_MouseLeave(object sender, EventArgs e)

{

Carets.HideCaret(this.Handle);

WACButton btn = (WACButton)sender;

btn.ImageIndex = 0;

Carets.ShowCaret(this.Handle);

}

private void btn_MouseEnter(object sender, EventArgs e)

{

Carets.HideCaret(this.Handle);

WACButton btn = (WACButton)sender;

btn.ImageIndex = 0;

Carets.ShowCaret(this.Handle);

}


is this the right way to use?

please give an example

thanks

raj

[Robert McNeal]

wouldn't the BeginUpdate() and EndUpdate() calls wrapped around your focus
code prevent the screen from repainting?

Robert

"Vern" wrote:

I have a routine that sets focus to all the controls on the form so it can
run the validate event for each of them.
Is there a way to prevent the user from seeing the cursor go through all the
fields?
Thanks,
Vern

[Robert McNeal]

wouldn't the BeginUpdate() and EndUpdate() calls wrapped around your focus
code prevent the screen from repainting?

Robert

"Vern" wrote:

I have a routine that sets focus to all the controls on the form so it can
run the validate event for each of them.
Is there a way to prevent the user from seeing the cursor go through all the
fields?
Thanks,
Vern