ShowDialog and this.Modal

Hi,
I'm working on a larger windows application in which I have a form that should
behave as an mdi-child or as a dialog depending on how it is diplayed. I thought
I'd display the form with ShowDialog() to get it modal and then at runtime check
for this.Modal in the form and set some properties.
This however, does not seem to work as this.Modal returns false even though I'm
showing the form using its ShowDialog method.
Here's the conditional mentioned above, just to show the idea.

if (this.Modal)

{

this.ShowInTaskbar = false;

this.MaximizeBox = false;

this.MinimizeBox = false;

this.FormBorderStyle = FormBorderStyle.FixedDialog;

this.SaveButton.Visible = false;

this.ChooseButton.DialogResult = DialogResult.OK;

foreach (Control ctrl in this.Controls)

ctrl.Left -= 72;

}


Thanks,

--
Magnus Lindberg, MCSD, MCT

* "Magnus Lindberg" <magnus.lindberg@inospam> scripsit:
> I'm working on a larger windows application in which I have a form that should
> behave as an mdi-child or as a dialog depending on how it is diplayed. I thought
> I'd display the form with ShowDialog() to get it modal and then at runtime check
> for this.Modal in the form and set some properties.
> This however, does not seem to work as this.Modal returns false even though I'm
> showing the form using its ShowDialog method.

You cannot show a MDI child modally.

--
Herfried K. Wagner [MVP]
<http://www.mvps.org/dotnet>

"Herfried K. Wagner [MVP]" <hirf-spam-me-here@gmx.at> wrote in message
news:%23I6oPkYvDHA.3532@TK2MSFTNGP11.phx.gbl...
> * "Magnus Lindberg" <magnus.lindberg@inospam> scripsit:
> > I'm working on a larger windows application in which I have a form that
should
> > behave as an mdi-child or as a dialog depending on how it is diplayed. I
thought
> > I'd display the form with ShowDialog() to get it modal and then at runtime
check
> > for this.Modal in the form and set some properties.
> > This however, does not seem to work as this.Modal returns false even though
I'm
> > showing the form using its ShowDialog method.
>
> You cannot show a MDI child modally.
>
> --
> Herfried K. Wagner [MVP]
> <http://www.mvps.org/dotnet>

But in the case where the form is shown modally, it is not an MDI child.
The application either sets the MdiParent property of the form and display it
with Show(), or it doesn't bother with MdiParent and just calls ShowDialog().
The form, when displayed with ShowDialog is clearly modal since I can't interact
with any other part of the application, yet this.Modal in the forms constructor
returns false.
I'm beginning to think that I have to check the Modal-property from outside of
the form.


--
Magnus Lindberg, MCSD, MCT
cshrp.net - "Elegant code by witty programmers"

Maybe try checking the mdiParent property for the same logic?

Just a thought...


--
Eric Newton
C#/ASP Application Developer
http://ensoft-software.com/
eric@cc.ensoft-software.com [remove the first "CC."]

"Magnus Lindberg" <magnus.lindberg@inospam> wrote in message
news:OYyXPuYvDHA.1744@TK2MSFTNGP12.phx.gbl...
> "Herfried K. Wagner [MVP]" <hirf-spam-me-here@gmx.at> wrote in message
> news:%23I6oPkYvDHA.3532@TK2MSFTNGP11.phx.gbl...
> > * "Magnus Lindberg" <magnus.lindberg@inospam> scripsit:
> > > I'm working on a larger windows application in which I have a form
that
> should
> > > behave as an mdi-child or as a dialog depending on how it is diplayed.
I
> thought
> > > I'd display the form with ShowDialog() to get it modal and then at
runtime
> check
> > > for this.Modal in the form and set some properties.
> > > This however, does not seem to work as this.Modal returns false even
though
> I'm
> > > showing the form using its ShowDialog method.
> >
> > You cannot show a MDI child modally.
> >
> > --
> > Herfried K. Wagner [MVP]
> > <http://www.mvps.org/dotnet>
>
> But in the case where the form is shown modally, it is not an MDI child.
> The application either sets the MdiParent property of the form and display
it
> with Show(), or it doesn't bother with MdiParent and just calls
ShowDialog().
> The form, when displayed with ShowDialog is clearly modal since I can't
interact
> with any other part of the application, yet this.Modal in the forms
constructor
> returns false.
> I'm beginning to think that I have to check the Modal-property from
outside of
> the form.
>
>
> --
> Magnus Lindberg, MCSD, MCT
> cshrp.net - "Elegant code by witty programmers"
>
>

Hi Magnus,

Why don't you just write your own Show method and set a flag before calling
ShowDialog.

Cheers

Doug Forster

"Magnus Lindberg" <magnus.lindberg@inospam> wrote in message
news:OYyXPuYvDHA.1744@TK2MSFTNGP12.phx.gbl...
> "Herfried K. Wagner [MVP]" <hirf-spam-me-here@gmx.at> wrote in message
> news:%23I6oPkYvDHA.3532@TK2MSFTNGP11.phx.gbl...
> > * "Magnus Lindberg" <magnus.lindberg@inospam> scripsit:
> > > I'm working on a larger windows application in which I have a form
that
> should
> > > behave as an mdi-child or as a dialog depending on how it is diplayed.
I
> thought
> > > I'd display the form with ShowDialog() to get it modal and then at
runtime
> check
> > > for this.Modal in the form and set some properties.
> > > This however, does not seem to work as this.Modal returns false even
though
> I'm
> > > showing the form using its ShowDialog method.
> >
> > You cannot show a MDI child modally.
> >
> > --
> > Herfried K. Wagner [MVP]
> > <http://www.mvps.org/dotnet>
>
> But in the case where the form is shown modally, it is not an MDI child.
> The application either sets the MdiParent property of the form and display
it
> with Show(), or it doesn't bother with MdiParent and just calls
ShowDialog().
> The form, when displayed with ShowDialog is clearly modal since I can't
interact
> with any other part of the application, yet this.Modal in the forms
constructor
> returns false.
> I'm beginning to think that I have to check the Modal-property from
outside of
> the form.
>
>
> --
> Magnus Lindberg, MCSD, MCT
> cshrp.net - "Elegant code by witty programmers"
>
>