Center Dialogs

If your installer built with Setup Factory uses dialogs with custom sizes, you may notice that the dialogs won't show centered when you jump from a small dialog to a larger dialog or vice-versa. With this script, the new dialogs will always remain centered relative to the position of the former dialog.

How it works

Place this into the Global functions:

 
function getScreenCenter()
  local tScreenCenter = {};
  local tProps = Screen.GetProperties();
  local hWnd = tProps.WindowHandle;
  local tPos = Window.GetPos(hWnd);
  local tSize = Window.GetSize(hWnd);
 
  tScreenCenter.X = tPos.X + tSize.Width/2;
  tScreenCenter.Y = tPos.Y + tSize.Height/2;
  return tScreenCenter;
end
 
function setScreenCenter(tScreenCenter)
  local tProps = Screen.GetProperties();
  local hWnd = tProps.WindowHandle;
  local tPos = Window.GetPos(hWnd);
  local tSize = Window.GetSize(hWnd);
  local CurrentDialog = {};
 
  CurrentDialog.X = tPos.X + tSize.Width/2;
  CurrentDialog.Y = tPos.Y + tSize.Height/2;
  local x = tPos.X + (tScreenCenter.X - CurrentDialog.X);
  local y = tPos.Y + (tScreenCenter.Y - CurrentDialog.Y);
  Window.SetPos(hWnd, x, y);
end

Place this into each On Preload script of your dialogs:

 
if (tScreenCenter ~= nil) then
  setScreenCenter(tScreenCenter);
end

Place this into each On Back and On Next scripts of your dialogs:
```
 
tScreenCenter = getScreenCenter();
 
```

With this code, the center of each dialog will not move when you navigate in the screens of your installer.

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