New instance of a Window

General
1

I have a button at frmMain that creates a instance of a frmTemplate (which is a Window or Form if you wish)

Dim frmInstance As New frmTemplate instanceShown = True // this is a property I will set to false once frmTemplate Close event fires in order for me to control whether the window is opened or not

Clicking the button again creates a new instance (indefinitely) but I just want to .show the frmTemplate (or setFocus on it) rather than creating a new Window.

I tried creating frmInstance as a frmMain property which works as desired, however, on button click I also need to set some properties on frmInstance and this way it will just not work properly (dunno why).

2

Instead of creating a new window each time you could just use .show :slight_smile:

 frmTemplate.show

Or check to see if instanceShown is true and only create a new window if it’s false.

If instanceShown = False Then
Dim frmInstance As New frmTemplate
instanceShown = True
End if
3

lol, okay I have multiple buttons :stuck_out_tongue: they launch the same window with different content

edit: many many buttons :smiley:

4

I think I found a workaround:

Just need to open the instanced window with visible=false, set his properties, and only then do a visible = true

This works with the Window as a property of frmMain so I can handle it better this way

edit: Unfortunately I cannot set instanced properties from frmMain, only change object properties. It’s okay

5

Why not? This should work fine.

6

@Tim Hare I can only set form related properties, this excludes variables (global properties) etc

For instance frmTemplate has a Label1 which I cannot handle from frmMain on button click

This is a scenario where frmInstance is a Window type property of frmMain

ButtonClick Event Code:

frmInstance = New frmTemplate frmInstance.Label1.Text = "Test" // *

  • not working, error (This item does not exist, highlighting frmInstance.Label1)
7

Wierd. Should work as Tim said.
One other alternative is to pass parameters through the Constructor. Could that work for you?
http://documentation.xojo.com/index.php/Constructor

8

How is frmInstance declared?

frmInstance as frmTemplate

  • or -
    frmInstance as Window

If the latter, then you have to cast to get at the contents specific to the window.

if frmInstance IsA frmTemplate then
   frmTemplate(frmInstance).Label1.Text = "Test"
end
9

Is as Window.

It’s working now! (without the Dim)

Tim thanks for the free “IsA” tip!

10

Okay, after two hours on this the best solution is a mix of Tim’s answer with Albin’s answer :wink:

Thanks