How to keep a WinForm.ShowDialog() within the App Main Container f

[Carlos Lozano]

Hi,

The default behavior for Modal forms does not restrict it to go out of the
client area of the main MDI container form.

I would like to show a modal form and keep it within the application
container form as any other non-modal MDI form.
I am not able to assign the MDIParent as it give an exception.

I will appreciate any suggestions.

Carlos Lozano
www.caxonline.net

[Carlos Lozano]

Hi Mark,

It does restrict the form to the container form client area, but causes a
boucing effect that does not look well.

It seems better using the default behavior.

Thank you anyway.

Carlos

"Mark R. Dawson" wrote:

Hi Carlos,
I do not believe this is possible since by defining the form as modal it
is a top level form and cannot be contained in any other form.

One way to fake this at a really simple level (I would like to hear from
anyone if there is a better way of doing this )would be to check in the Move
event of the child form for boundary conditions compared to the owner form
and it they are outside the boundary then automatically move the form back
inside the owner.

i.e.
Form1_ButtonClick()
{
Form2 f = new Form2();
f.Owner = this;

//set the position of f to be inside the owner form so that when
//it is opened it is inside the owner.

f.ShowDialog();
}
//Inside Form2 class

private void Form2_Move(object sender, EventArgs e)
{
if(this.Left < this.Owner.Left)
{
this.Left = this.Owner.Left;
}

//same for right, top and bottom
}
Mark

"Carlos Lozano" wrote:

Hi,

The default behavior for Modal forms does not restrict it to go out of the
client area of the main MDI container form.

I would like to show a modal form and keep it within the application
container form as any other non-modal MDI form.
I am not able to assign the MDIParent as it give an exception.

I will appreciate any suggestions.

Carlos Lozano
www.caxonline.net