雨が降ったら休みたい @ ウィキ
雨が降ったら休みたい @ ウィキ

Owner Window(親ウィンドウ)の中央に表示されるMessageBox

  • 使い方
①フォームにボタン(button1)を加える
②button1のクリックイベントにbutton1_Clickを設定する
③usingにCustomMsgBox(当プログラムのnamespace)を加える
④以下のコードをフォームのコードに加える 
        private void button1_Click(object sender, EventArgs e)
        {
            MsgBox.Show(this, "wow");
            MsgBox.Show(this, "wow", "cap");
            MsgBox.Show(this, "wow", "cap", MessageBoxButtons.OK);
            MsgBox.Show(this, "wow", "cap", MessageBoxButtons.OK, MessageBoxIcon.Information);
            MsgBox.Show(this, "wow", "cap", MessageBoxButtons.OK, MessageBoxIcon.Information, MessageBoxDefaultButton.Button1);
            MsgBox.Show(this, "wow", "cap", MessageBoxButtons.OK, MessageBoxIcon.Information, MessageBoxDefaultButton.Button1, MessageBoxOptions.RightAlign);
            MsgBox.Show(this, "wow", "cap", MessageBoxButtons.OK, MessageBoxIcon.Information, MessageBoxDefaultButton.Button1, MessageBoxOptions.RightAlign, "");
            MsgBox.Show(this, "wow", "cap", MessageBoxButtons.OK, MessageBoxIcon.Information, MessageBoxDefaultButton.Button1, MessageBoxOptions.RightAlign, "", HelpNavigator.Index);
            MsgBox.Show(this, "wow", "cap", MessageBoxButtons.OK, MessageBoxIcon.Information, MessageBoxDefaultButton.Button1, MessageBoxOptions.RightAlign, "", HelpNavigator.Index, null);
        }

  • Owner Window中央に表示されるMessageBox
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;
using System.Windows.Forms;
using System.Windows;

namespace CustomMsgBox
{
    /// <summary>
    /// Owner Window中央に表示されるMessageBox
    /// </summary>
    public class MsgBox
    {
        [DllImport("user32.dll")]
        public static extern bool UnhookWindowsHookEx(IntPtr hHook);
        [DllImport("user32.dll")]
        public static extern IntPtr GetWindowLong(IntPtr hWnd, int nIndex);
        [DllImport("kernel32.dll")]
        public static extern IntPtr GetCurrentThreadId();
        [DllImport("user32.dll")]
        public static extern IntPtr SetWindowsHookEx(int idHook, HOOKPROC lpfn, IntPtr hMod, IntPtr dwThreadId);
        [DllImport("user32.dll")]
        public static extern IntPtr CallNextHookEx(IntPtr hHook, int nCode, IntPtr wParam, IntPtr lParam);
        [DllImport("user32.dll")]
        public static extern bool SetWindowPos(IntPtr hWnd, int hWndInsertAfter, int X, int Y, int cx, int cy, uint uFlags);
        [DllImport("user32.dll")]
        public static extern bool GetWindowRect(IntPtr hWnd, out RECT lpRect);

        public [[delegate]] IntPtr HOOKPROC(int nCode, IntPtr wParam, IntPtr lParam);

        public [[enum]] HookType : int
        {
            WH_JOURNALRECORD = 0,
            WH_JOURNALPLAYBACK = 1,
            WH_KEYBOARD = 2,
            WH_GETMESSAGE = 3,
            WH_CALLWNDPROC = 4,
            WH_CBT = 5,
            WH_SYSMSGFILTER = 6,
            WH_MOUSE = 7,
            WH_HARDWARE = 8,
            WH_DEBUG = 9,
            WH_SHELL = 10,
            WH_FOREGROUNDIDLE = 11,
            WH_CALLWNDPROCRET = 12,
            WH_KEYBOARD_LL = 13,
            WH_MOUSE_LL = 14,
        }

        public enum GWL : int
        {
            GWL_HINSTANCE = (-6),
            GWL_HWNDPARENT = (-8),
            GWL_ID = (-12),
            GWL_EXSTYLE = (-20),
            GWL_STYLE = (-16),
            GWL_WNDPROC = (-16),
            GWL_USERDATA = (-21),
        }

        public enum SWP : 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,
        }

        public enum HCBT : int
        {
            HCBT_ACTIVATE = 5,
            HCBT_CLICKSKIPPED = 6,
            HCBT_CREATEWND = 3,
            HCBT_DESTROYWND = 4,
            HCBT_KEYSKIPPED = 7,
            HCBT_MINMAX = 1,
            HCBT_MOVESIZE = 0,
            HCBT_QS = 2,
            HCBT_SETFOCUS = 9,
            HCBT_SYSCOMMAND = 8,
        }

        public struct RECT
        {
            public int Left;
            public int Top;
            public int Right;
            public int Bottom;
            public int Width
            {
                get
                {
                    return Right - Left;
                }
            }
            public int Height
            {
                get
                {
                    return Bottom - Top;
                }
            }
        }

        /// <summary>
        /// 親ウィンドウ
        /// </summary>
        private IWin32Window OwnerWindow;

        /// <summary>
        /// フックハンドル
        /// </summary>
        private IntPtr HHook;

        /// <summary>
        /// コンストラクタ
        /// </summary>
        /// <param name="owner">親ウィンドウ</param>
        private MsgBox(IWin32Window owner)
        {
            OwnerWindow = owner;
        }

        public static DialogResult Show(
            IWin32Window owner,
            string text)
        {
            MsgBox mb = new MsgBox(owner);
            return mb.ShowMsgDialog(text);
        }

        public static DialogResult Show(
            IWin32Window owner,
            string text,
            string caption)
        {
            MsgBox mb = new MsgBox(owner);
            return mb.ShowMsgDialog(text, caption);
        }

        public static DialogResult Show(
            IWin32Window owner,
            string text,
            string caption,
            MessageBoxButtons buttons)
        {
            MsgBox mb = new MsgBox(owner);
            return mb.ShowMsgDialog(text, caption, buttons);
        }

        public static DialogResult Show(
            IWin32Window owner,
            string text,
            string caption,
            MessageBoxButtons buttons,
            MessageBoxIcon icon)
        {
            MsgBox mb = new MsgBox(owner);
            return mb.ShowMsgDialog(text, caption, buttons, icon);
        }

        public static DialogResult Show(
            IWin32Window owner,
            string text,
            string caption,
            MessageBoxButtons buttons,
            MessageBoxIcon icon,
            MessageBoxDefaultButton defaultButton)
        {
            MsgBox mb = new MsgBox(owner);
            return mb.ShowMsgDialog(text, caption, buttons, icon, defaultButton);
        }

        public static DialogResult Show(
            IWin32Window owner,
            string text,
            string caption,
            MessageBoxButtons buttons,
            MessageBoxIcon icon,
            MessageBoxDefaultButton defaultButton,
            MessageBoxOptions options)
        {
            MsgBox mb = new MsgBox(owner);
            return mb.ShowMsgDialog(text, caption, buttons, icon, defaultButton, options);
        }

        public static DialogResult Show(
            IWin32Window owner,
            string text,
            string caption,
            MessageBoxButtons buttons,
            MessageBoxIcon icon,
            MessageBoxDefaultButton defaultButton,
            MessageBoxOptions options,
            string helpFilePath)
        {
            MsgBox mb = new MsgBox(owner);
            return mb.ShowMsgDialog(text, caption, buttons, icon, defaultButton, options, helpFilePath);
        }

        public static DialogResult Show(
            IWin32Window owner,
            string text,
            string caption,
            MessageBoxButtons buttons,
            MessageBoxIcon icon,
            MessageBoxDefaultButton defaultButton,
            MessageBoxOptions options,
            string helpFilePath,
            HelpNavigator navigator)
        {
            MsgBox mb = new MsgBox(owner);
            return mb.ShowMsgDialog(text, caption, buttons, icon, defaultButton, options, helpFilePath, navigator);
        }

        public static DialogResult Show(
            IWin32Window owner,
            string text,
            string caption,
            MessageBoxButtons buttons,
            MessageBoxIcon icon,
            MessageBoxDefaultButton defaultButton,
            MessageBoxOptions options,
            string helpFilePath,
            HelpNavigator navigator,
            object param)
        {
            MsgBox mb = new MsgBox(owner);
            return mb.ShowMsgDialog(text, caption, buttons, icon, defaultButton, options, helpFilePath, navigator, param);
        }

        private DialogResult ShowMsgDialog(
            string text)
        {
            // フック設定
            SetHook(OwnerWindow);
            return MessageBox.Show(OwnerWindow, text);
        }

        private DialogResult ShowMsgDialog(
            string text,
            string caption)
        {
            // フック設定
            SetHook(OwnerWindow);
            return MessageBox.Show(OwnerWindow, text, caption);
        }

        private DialogResult ShowMsgDialog(
            string text,
            string caption,
            MessageBoxButtons buttons)
        {
            // フック設定
            SetHook(OwnerWindow);
            return MessageBox.Show(OwnerWindow, text, caption, buttons);
        }

        private DialogResult ShowMsgDialog(
            string text,
            string caption,
            MessageBoxButtons buttons,
            MessageBoxIcon icon)
        {
            // フック設定
            SetHook(OwnerWindow);
            return MessageBox.Show(OwnerWindow, text, caption, buttons, icon);
        }

        private DialogResult ShowMsgDialog(
            string text,
            string caption,
            MessageBoxButtons buttons,
            MessageBoxIcon icon,
            MessageBoxDefaultButton defaultButton)
        {
            // フック設定
            SetHook(OwnerWindow);
            return MessageBox.Show(OwnerWindow, text, caption, buttons, icon, defaultButton);
        }

        private DialogResult ShowMsgDialog(
            string text,
            string caption,
            MessageBoxButtons buttons,
            MessageBoxIcon icon,
            MessageBoxDefaultButton defaultButton,
            MessageBoxOptions options)
        {
            // フック設定
            SetHook(OwnerWindow);
            return MessageBox.Show(OwnerWindow, text, caption, buttons, icon, defaultButton, options);
        }

        private DialogResult ShowMsgDialog(
            string text,
            string caption,
            MessageBoxButtons buttons,
            MessageBoxIcon icon,
            MessageBoxDefaultButton defaultButton,
            MessageBoxOptions options,
            string helpFilePath)
        {
            // フック設定
            SetHook(OwnerWindow);
            return MessageBox.Show(OwnerWindow, text, caption, buttons, icon, defaultButton, options, helpFilePath);
        }

        private DialogResult ShowMsgDialog(
            string text,
            string caption,
            MessageBoxButtons buttons,
            MessageBoxIcon icon,
            MessageBoxDefaultButton defaultButton,
            MessageBoxOptions options,
            string helpFilePath,
            HelpNavigator navigator)
        {
            // フック設定
            SetHook(OwnerWindow);
            return MessageBox.Show(OwnerWindow, text, caption, buttons, icon, defaultButton, options, helpFilePath, navigator);
        }

        private DialogResult ShowMsgDialog(
            string text,
            string caption,
            MessageBoxButtons buttons,
            MessageBoxIcon icon,
            MessageBoxDefaultButton defaultButton,
            MessageBoxOptions options,
            string helpFilePath,
            HelpNavigator navigator,
            object param)
        {
            // フック設定
            SetHook(OwnerWindow);
            return MessageBox.Show(OwnerWindow, text, caption, buttons, icon, defaultButton, options, helpFilePath, navigator, param);
        }

        /// <summary>
        /// フックプロシージャ
        /// </summary>
        /// <param name="nCode"></param>
        /// <param name="wParam"></param>
        /// <param name="lParam"></param>
        /// <returns></returns>
        private IntPtr CBTProc(
            int nCode,
            IntPtr wParam,
            IntPtr lParam)
        {

            if (nCode == (int)HCBT.HCBT_ACTIVATE)
            {
                RECT rectOwner;
                RECT rectMsgBox;
                int x, y;

                // Window位置・サイズ取得
                GetWindowRect(OwnerWindow.Handle, out rectOwner);
                GetWindowRect(wParam, out rectMsgBox);

                // MessageBox出力位置設定
                x = rectOwner.Left + (rectOwner.Width - rectMsgBox.Width) / 2;
                y = rectOwner.Top + (rectOwner.Height - rectMsgBox.Height) / 2;

                SetWindowPos(wParam, 0, x, y, 0, 0, (uint)(SWP.SWP_NOSIZE | SWP.SWP_NOZORDER | SWP.SWP_NOACTIVATE));

                // フック解除
                UnhookWindowsHookEx(HHook);
            }
            // 次のプロシージャへのポインタ
            return CallNextHookEx(HHook, nCode, wParam, lParam);
        }

        /// <summary>
        /// フック設定
        /// </summary>
        /// <param name="owner"></param>
        private void SetHook(IWin32Window owner)
        {
            // フック設定
            IntPtr hInstance = GetWindowLong(OwnerWindow.Handle, (int)GWL.GWL_HINSTANCE);
            IntPtr threadId = GetCurrentThreadId();
            HHook = SetWindowsHookEx((int)HookType.WH_CBT, new HOOKPROC(CBTProc), hInstance, threadId);
        }

    }
}

「Owner Window(親ウィンドウ)の中央に表示されるMessageBox」をウィキ内検索
最終更新：2012年03月04日 02:33
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