Hide a Window only if is Open

General
1

Hi! i am using desktop programming and i want to hide a window ONLY and JUST ONLY if is open. i dont know even if that is possible with xojo. When i try to hide it using window.hide or window1.visible=false if the window is not loaded, xojo loads the window and then hide it. i think it occurs because xojo can’t hide a window that is not loaded, so xojo load the window and then hide it. the problem with this scenario is that if i have code into the “open” event it is executed.
my question is… How do i hide a window ONLY if is loaded?
thank a lot!

2

Turn off ImplicitInstance. You might want to take a look af this window property in the language reference.

3

thanks alex. i have read that page but i still can’t figure out how to do that when it comes of do the code. could you give me a little code example maybe? again thanks a lot alex.

4

There is no “code”… just turn off the ImplictInstance for that window [see Inspector]

5

No need to turn off implicitinstance…

Create a desktop app with 2 windows, and on the first one place two pushbuttons.

In PB1.Action add:

  if Window2.Visible = true then
    window2.Close // -or- window2.visible = false
  end if

and in PB2.Action add:

window2.Show

A rule of thumb to remember is:

A window cannot be visible if it is not open. But an open window can be visible or invisible.

6

Just set Visible to False in the window editor.

7

I’ve done this for ages.

Sub WindowHide (WindowName As String) for i as integer = 0 to WindowCount - 1 Dim t as Introspection.TypeInfo = Introspection.GetType(window(i)) if t.Name = WindowName then window(i).Hide next i End Sub

An then you just have to write:

WindowHide (MyWindow) and MyWindow will hide only if it’s open.

8

thanks all of you for the responses. i found particularly useful the ramon sastre reply. it is just what i was looking for. i need something like the sub WindowHide proposed by ramon but will be WindowShow(WindowName as String) that shows the window ONLY if it was previously loaded. how could i do that?
i think maybe it could be

Sub WindowHide (WindowName As String) for i as integer = 0 to WindowCount - 1 Dim t as Introspection.TypeInfo = Introspection.GetType(window(i)) if t.Name = WindowName then window(i).SHOW '--> here is the only change next i End Sub

9

my question was solved 100% thanks everyone! :slight_smile: