asked on

how to check if window is on top, window = hasfocus? - c# form application

i would like to set focus on a text field, when window(form) in on top of all on the desktop.

i have experimented with this ...
private void Form1_Resize(object sender, System.EventArgs e)
{
if (this.WindowState == FormWindowState.Maximized)
{
MessageBox.Show("Maximized");
}
else if (this.WindowState == FormWindowState.Minimized)
{
MessageBox.Show("Minimized");
}
if (ActiveForm == this)
{
MessageBox.Show("activated");
textBox2.Focus();
}
}

but this code only shows ...
"MessageBox.Show("Minimized");, window.

it only detects miinimized state, not the returning to maximiz state.
i would like to know how to detect if a form application is on top.

thank u.

i'm fairly a n oob in this materiaal.

c# vsX2008

kind regards

Bruce_1975

You can override the OnActivated() Method of the form.

Regards,
Bruce

protected override void OnActivated(EventArgs e)
{
    textBox2.Focus();
}

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Natural_Demon

ASKER

ok, and how to the detect the contrary?
if it's behind another program?

i have tested something like this after looking in google.

protected override void OnDeactivated(EventArgs e)
{
MessageBox.Show("hubabuba");
}

this give error.

Bruce_1975

Thats a possible way that should work. What error do you get?

Regards,
Bruce

Natural_Demon

ASKER

Error 1
'WindowsFormsApplication1.Form1.OnDeactivated(System.EventArgs)':
no suitable method found to override formtest

: (
i found the keyword on msdn after u mentioned the other

ASKER CERTIFIED SOLUTION

Bruce_1975

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See answer

Natural_Demon

ASKER

thnix, orks fine, and i tested a bit.

        protected override void OnActivated(EventArgs e)
        {
            textBox3.Text = "hhhhi";
            textBox3.Focus();
        }
 
 
        protected override void OnDeactivate(EventArgs e)
        {
            textBox3.Text = "";
        }

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