How to resize another program window?

Question

How can I change another program - say, the size of the Skype window - from my program in C #?

Answer 1

You can use MoveWindow (where hWnd is the window you want to move):

[DllImport("user32.dll", SetLastError = true)] internal static extern bool MoveWindow(IntPtr hWnd, int X, int Y, int nWidth, int nHeight, bool bRepaint); MoveWindow(ApplicationHandle, 600, 600, 600, 600, true); 

If you do not know the window pointer, you can use FindWindow .

It's also worth reading the MSDN SetWindowPos (very similar to MoveWindow).

Answer 2

You need to get the window handle of another program, use Process.MainWindowHandle or FindWindow .

After that, you can PInvoke SetWindowPos () to move, resize, change the position of the Z-order or min / max / restore window.

Answer 3

I would use Windows Api SetWindowPos

check this out: Using SetWindowPos in C # to move windows around

Of course, first you need to know the handle of the window you want to change, this can be done in different ways, for example, getting a process by name, then MainWindow of this process or using the EnumWindow or FindWindow API