How to set the height of a window using c#?

Is it possible to set the height of a window using the window handle or process handl开发者_如何学运维e?

I have the following so far, assume the application in question is notepad.

Process[] processes = Process.GetProcessesByName("notepad");

foreach (Process p in processes)
{

    if (p.MainWindowTitle == title)
    {

        handle = p.MainWindowHandle;

        while ((handle = p.MainWindowHandle) == IntPtr.Zero)
        {
            Thread.Sleep(1000);
            p.Refresh();
        }

        break;
    }

}

Can I make use of handle or p to set the height of the window?

This is how I would do it:

using System;
using System.Diagnostics;
using System.Runtime.InteropServices;

namespace ConsoleApplication1
{
    class Program
    {
        [StructLayout(LayoutKind.Sequential)]
        public struct RECT
        {
            public int left;
            public int top;
            public int right;
            public int bottom;
        }

        [DllImport("user32.dll", SetLastError = true)]
        static extern bool GetWindowRect(IntPtr hWnd, ref RECT Rect);

        [DllImport("user32.dll", SetLastError = true)]
        static extern bool MoveWindow(IntPtr hWnd, int X, int Y, int Width, int Height, bool Repaint);

        static void Main(string[] args)
        {
            Process[] processes = Process.GetProcessesByName("notepad");
            foreach (Process p in processes)
            {
                IntPtr handle = p.MainWindowHandle;
                RECT Rect = new RECT();
                if (GetWindowRect(handle, ref Rect))
                    MoveWindow(handle, Rect.left, Rect.right, Rect.right-Rect.left, Rect.bottom-Rect.top + 50, true);
            }
        }
    }
}

While you can do it with SetWindowPos, and SetWindowPos is the newer and more capable API, MoveWindow is just easier to call.

You should be able to use the Win32 SetWindowPos function (use for both position and size). Here's a link for how to do it in C#.

Here's a quick sample. This will move notepad to (10,10) on the screen, and resize it to (450,450):

class Program
{
    [DllImport("user32.dll")]
    [return: MarshalAs(UnmanagedType.Bool)]
    static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int X, int Y, int cx, int cy, SetWindowPosFlags uFlags);

    static void Main(string[] args)
    {
        Console.WriteLine("Start notepad and hit any key...");
        Console.ReadKey(true);
        Process[] processes = Process.GetProcessesByName("notepad");

        foreach (Process p in processes)
        {
            var handle = p.MainWindowHandle;

            SetWindowPos(handle, new IntPtr(SpecialWindowHandles.HWND_TOP), 10,10,450,450,SetWindowPosFlags.SWP_SHOWWINDOW);

            break;

        }

    }
}

public enum SpecialWindowHandles
{
    HWND_TOP = 0,
    HWND_BOTTOM = 1,
    HWND_TOPMOST = -1,
    HWND_NOTOPMOST = -2
}

[Flags]
public enum SetWindowPosFlags : uint
{
    SWP_ASYNCWINDOWPOS = 0x4000,

    SWP_DEFERERASE = 0x2000,

    SWP_DRAWFRAME = 0x0020,

    SWP_FRAMECHANGED = 0x0020,

    SWP_HIDEWINDOW = 0x0080,

    SWP_NOACTIVATE = 0x0010,

    SWP_NOCOPYBITS = 0x0100,

    SWP_NOMOVE = 0x0002,

    SWP_NOOWNERZORDER = 0x0200,

    SWP_NOREDRAW = 0x0008,

    SWP_NOREPOSITION = 0x0200,

    SWP_NOSENDCHANGING = 0x0400,

    SWP_NOSIZE = 0x0001,

    SWP_NOZORDER = 0x0004,

    SWP_SHOWWINDOW = 0x0040,
}