Set Height, Width and screen location of any window

Question

Hi I looked into this guy question and got some of my answer but I would like to instead of resizing explorer I would like to resize discord or firefox for instance

 private void windowsPos(string name, Rect pos){ foreach (SHDocVw.InternetExplorer window in new SHDocVw.ShellWindows()){ if (Path.GetFileNameWithoutExtension(window.FullName).ToLowerInvariant() == name){ window.Left = pos.Left; window.Top = pos.Top; window.Width = pos.Width; window.Height = pos.Height; } } }

But this works only for explorer I tried other exe but it works only for explorer ... can someone help me adapt this code to my requirements ?

This could be done by using some native Win32 methods. First you want to get the main window by enumerating all Windows on the computer that belong to a current processID. Use "EnumWindows" for that. Once you have the main window use "SetWindowPos(hWnd, NULL, 0, 0, width, height, SWP_NOMOVE)" to set its size. Testing this with C/C++ first to make sure it works is easier. Then wrap the methods you need in C#. — zezba9000
– zezba9000, Commented Dec 31, 2019 at 20:14
SHDocVw.ShellWindows() only lists IE and Explorer windows which are all the shell controls directly (remnants of IE integration in Windows). You need something like this answer. — NetMage
– NetMage, Commented Dec 31, 2019 at 20:38
AutomationElement.FindFirst() (or FromHandle() or FromPoint() etc.) + TransformPattern → Move(), → Resize() — Jimi
– Jimi, Commented Dec 31, 2019 at 21:09
Or WinfowsPattern.SetWindowVisualState (minimize, maximize...), Close() etc. — Jimi
– Jimi, Commented Dec 31, 2019 at 21:13

Grez · Accepted Answer · 2020-01-01 21:11:28Z

Thank you @zezba9000 & @NetMage your answsers were the ones that worked ... I went on PInvoke - EnumWindows to get the general idea of how it works and the used Reed's answer to get to this code :

 public class SearchData{ public string Title; public IntPtr hWnd; } private delegate bool EnumWindowsProc(IntPtr hWnd, ref SearchData data); [DllImport("user32.dll")] [return: MarshalAs(UnmanagedType.Bool)] private static extern bool EnumWindows(EnumWindowsProc lpEnumFunc, ref SearchData data); [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)] public static extern int GetWindowText(IntPtr hWnd, StringBuilder lpString, int nMaxCount); [DllImport("user32.dll", EntryPoint = "SetWindowPos")] public static extern IntPtr SetWindowPos(IntPtr hWnd, int hWndInsertAfter, int x, int Y, int cx, int cy, int wFlags); private void test(){ IntPtr hwnd = SearchForWindow("Discord"); SetWindowPos(hwnd, 0, 50, 175, 1000, 750, 0x0040); } public IntPtr SearchForWindow(string title){ SearchData sd = new SearchData { Title = title }; EnumWindows(new EnumWindowsProc(EnumProc), ref sd); return sd.hWnd; } public bool EnumProc(IntPtr hWnd, ref SearchData data){ StringBuilder sb = new StringBuilder(1024); GetWindowText(hWnd, sb, sb.Capacity); if (sb.ToString().Contains(data.Title)){ data.hWnd = hWnd; return false; } else return true; }

Also @Jimi I tried your approach but I could not work with it because it could not find Automation in the System.Windows namespace

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