Shoutbox

Okay, so I was working on my top secret script project (*evil laugh*), but then I stumbled onto something VERY weird... Here's the situation.

I've got a parent window, the Preferences window. It contains some bottom bar buttons and links to the various preferences child windows. When the user clicks a such link, the associated child window becomes visible while the others are hidden. Using a simple piece of code, the child windows get resized along with the parent when the parent is resizing:

code:

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function OnWndPrefEvent_MessageNotification(PlusWnd, Message, wParam, lParam) {
   if(Message == /* WM_SIZE */ 0x5) {
      //MSDN told me that the width and height are in the lParam, so let's make use of it
      var wWidth = lParam & 0xFFFF; //Get low-order word
      var wHeight = (lParam >> 16); //Get high-order word
      //Now, we need to crop the area for the child windows
      cWidth = wWidth - 15;
      cHeight = wHeight - 117;
      //Finally, resize the child windows
      Interop.Call("User32", "SetWindowPos", Wnd["WndPrefGeneral"].Handle, 0, 0, 0, cWidth, cHeight, 18);
      Interop.Call("User32", "SetWindowPos", Wnd["WndPrefLanguage"].Handle, 0, 0, 0, cWidth, cHeight, 18);
   }
   //Let the window do its stuff too (don't know what, but who cares)
   return -1;
}

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(The values I subtract from the size are found out by trying out, changing and re-try. No special maths were used for it.)
The above code worked flawless, everything resized perfectly... except one thing I found out today.

While I was working on the Languages child window, I found out that a specific combination of a ListViewControl with LargeIconView and a LinkControl with a BottomFixed Anchor attribute can cause a glitch, making the LinkControl return to the original position, before the window got resized. A quick compiled image should clarify this:

As you can see, the LinkControl jumps to it's original position. When I try to resize the window vertically then, the control moves from that position. So, if I resize the parent 10 pixels upwards, the control moves 10 pixels upwards, meaning that it actually took a new position.

If you want to reproduce this, create a window, create a child window with a ListViewControl with LargeIconView and a LinkControl with BottomFixed. Make the parent resizable and use the above code for the child window resizing. Add 2 items to the ListViewControl and follow the instructions.

Now, I'd like to know: can this glitch be fixed with a piece of code or is it caused by Plus! itself? Or is there any other reason which might cause this happening?

Specifications:
Windows Vista Ultimate x64
Windows Live Messenger 8.1.0178 (skinned with Windows Aero Messenger)
Messenger Plus! Live 4.23.0.276

Update:
This only happens if you change the text of the LinkControl when the ListViewControl's selection changes (using OnWndIdEvent_LstViewSelStateChanged). However, I still wonder why this happens...

I can't seem to set the position of the LinkControl using SetWindowPos neither... probably because it's anchored, but then how can I fix this? I need some help here!

I can now confirm that when PlusWnd.SetControlText() is called, the position is restored. When I added Wnd["WndPrefLanguage"].SetControlText("LnkWebsite", "http://") to the resize event, I could clearly see how it always jumps to the start position while the window resizes. So, OR it's the way my event is built, OR it's SetControlText causing this.

Sounds like a bug in your anchoring in your xml file.

Try using this

code:

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<Anchor Vertical="TopBottomFixed" />

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code:

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<Anchor Vertical="BottomFixed" />

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It isn't documented but i think it works...
Confirmed, it works

I don't think you get it... I want it to be bottom fixed (so I set <Anchor Vertical="BottomFixed">), but it jumps back to the original position when the ListViewControl's selection changes. This is because I call PlusWnd.SetControlText on the LinkControl in that event, but I don't know why it's doing this.

i don't see any difference between screenshot 2 and 3...

quote:

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Originally posted by ShawnZ
i don't see any difference between screenshot 2 and 3...

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The link moved...
* Matti gives ShawnZ some trendy glasses.

I did some testing when you change the text of a LinkControl when it has an Anchor the control moves to its original position.

Does this with SetControlText, WM_SETTEXT, SetWindowTextW.