" A good
example of that is where I have 3 or 4 panels on a single form and I want
one keypress event to process every keypress on the form itself... as
opposed to having individual keypress events for each panel.
"
Any WinForm has a KeyPreview property that will cause all key events on
child controls to occur on the Form first before occuring on the control.
"What I want is something that loads the child
form within the parent form... and I don't want to have to control it. I
figured that using an MDI form but only allowing the child forms to open
once copy of the form, would sort of give me the results I am looking for.
"
There are several ways to go about this for an MDI application.
In general if you need only one type of form open at once, you need to have
a dictionary keyed from the "type" of form you're using to generate and the
value being the form instance itself.
Here's is one example you might find useful. You didn't specify a language
so I'll use C# here:
private Dictionary<string, BaseForm> _forms = new Dictionary<string,
BaseForm>();
/// <summary>
/// Creates an instance of the specified form if it's not already
present in the list.
/// </summary>
/// <typeparam name="FormType"></typeparam>
private BaseForm CreateForm<FormType>() where FormType: BaseForm {
BaseForm form = null;
if (!_forms.ContainsKey(typeof(FormType).Name)) {
form = new FormType();
}
else {
form = _forms[typeof(FormType)];
}
//Additional code goes here...
//Return the form.
return form;
}
You can use this method to create a new form, or return you one that already
exists without having to know if it does or not.
On 2/12/07, Jon Rothlander <[EMAIL PROTECTED]> wrote:
I'm having some problems using the KeyPress event in various winForms. I
want to have a common keypress event set of code that will process of the
F-Key presses. I have the code worked up but I am finding that on
different
forms the event doesn't fire. For example, when I added a tabbed control
to
the page, the form's keypress event stopped firing. However, the tabbed
control's keypress event is working. So I just moved the code from the
form's keypress event to the tabbed controls keypress event. The problem
here is that I only want one type of keypress event for ALL of my forms
and
sometimes I cannot find a keypress event that actually works. A good
example of that is where I have 3 or 4 panels on a single form and I want
one keypress event to process every keypress on the form itself... as
opposed to having individual keypress events for each panel.
Any ideas how I could build a keypress event that would work on all forms
regardless of what's on them? Just one keypress for everything on the
form.
You figure that the form_keypress event would be what I am looking for.
However, it doesn't always work. Am I missing something?
Also, I am trying to use an MDI parent/child form to create an IDE like UI
for this application. The problem here is that MDI isn't exactly what I
need because you can only create ONE instance of each form. So I do not
want to create the traditional multi-document interface like used in
something like Word or Excel. What I want is something that loads the
child
form within the parent form... and I don't want to have to control it. I
figured that using an MDI form but only allowing the child forms to open
once copy of the form, would sort of give me the results I am looking for.
What I would like to know is if there is another way to handle this? What
I
would like is something like how the .Net IDE works. You have the parent
form with child forms, but you can only open one instance of each child
form
at a time... as opposed to multi like you could in Word or Excel.
How would you recommend this sort of IDE be built? Should I be using the
MDI parent/child forms? Is there an easier way to build IDEs like this?
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