回答編集履歴
1
質問事項では無いが、実行中のツールチップについての追記
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0. リビルドして、EXEをタスクバーにピン留めすると「何でもOK」とツールチップに表示される
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### 実行中のツールチップについての追記
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実行中のツールチップが制御できないじゃんって事でちょっと調べました。
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※Microsoft.WindowsAPICodePack-Shellを使えばプログレスバーやアイコンのオーバーレイなんかはできるんだけど、何故かツールチップは無い
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- 下記コードを「TaskbarAPI.cs」みたいな感じで追加([コピペ元](https://wpf.2000things.com/2014/03/19/1032-show-progress-on-windows-taskbar-icon/))
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```C#
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using System;
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using System.Runtime.InteropServices;
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namespace TeraTaskBarTooltip {
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internal enum HResult {
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Ok = 0x0000
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// Add more constants here, if necessary
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}
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public enum TaskbarProgressBarStatus {
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NoProgress = 0,
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Indeterminate = 0x1,
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Normal = 0x2,
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Error = 0x4,
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Paused = 0x8
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}
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internal enum ThumbButtonMask {
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Bitmap = 0x1,
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Icon = 0x2,
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Tooltip = 0x4,
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THB_FLAGS = 0x8
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}
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[Flags]
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internal enum ThumbButtonOptions {
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Enabled = 0x00000000,
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Disabled = 0x00000001,
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DismissOnClick = 0x00000002,
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NoBackground = 0x00000004,
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Hidden = 0x00000008,
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NonInteractive = 0x00000010
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}
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[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
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internal struct ThumbButton {
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///
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/// WPARAM value for a THUMBBUTTON being clicked.
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///
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internal const int Clicked = 0x1800;
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[MarshalAs(UnmanagedType.U4)]
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internal ThumbButtonMask Mask;
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internal uint Id;
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internal uint Bitmap;
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internal IntPtr Icon;
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[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
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internal string Tip;
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[MarshalAs(UnmanagedType.U4)]
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internal ThumbButtonOptions Flags;
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}
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internal enum SetTabPropertiesOption {
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None = 0x0,
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UseAppThumbnailAlways = 0x1,
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UseAppThumbnailWhenActive = 0x2,
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UseAppPeekAlways = 0x4,
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UseAppPeekWhenActive = 0x8
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}
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// using System.Runtime.InteropServices
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[ComImportAttribute()]
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[GuidAttribute("c43dc798-95d1-4bea-9030-bb99e2983a1a")]
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[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
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internal interface ITaskbarList4 {
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// ITaskbarList
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[PreserveSig]
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void HrInit();
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[PreserveSig]
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void AddTab(IntPtr hwnd);
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[PreserveSig]
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void DeleteTab(IntPtr hwnd);
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[PreserveSig]
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void ActivateTab(IntPtr hwnd);
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[PreserveSig]
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void SetActiveAlt(IntPtr hwnd);
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// ITaskbarList2
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[PreserveSig]
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void MarkFullscreenWindow(
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IntPtr hwnd,
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[MarshalAs(UnmanagedType.Bool)] bool fFullscreen);
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// ITaskbarList3
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[PreserveSig]
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void SetProgressValue(IntPtr hwnd, UInt64 ullCompleted, UInt64 ullTotal);
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[PreserveSig]
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void SetProgressState(IntPtr hwnd, TaskbarProgressBarStatus tbpFlags);
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[PreserveSig]
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void RegisterTab(IntPtr hwndTab, IntPtr hwndMDI);
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[PreserveSig]
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void UnregisterTab(IntPtr hwndTab);
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[PreserveSig]
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void SetTabOrder(IntPtr hwndTab, IntPtr hwndInsertBefore);
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[PreserveSig]
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void SetTabActive(IntPtr hwndTab, IntPtr hwndInsertBefore, uint dwReserved);
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[PreserveSig]
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HResult ThumbBarAddButtons(
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IntPtr hwnd,
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uint cButtons,
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[MarshalAs(UnmanagedType.LPArray)] ThumbButton[] pButtons);
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[PreserveSig]
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HResult ThumbBarUpdateButtons(
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IntPtr hwnd,
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uint cButtons,
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[MarshalAs(UnmanagedType.LPArray)] ThumbButton[] pButtons);
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[PreserveSig]
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void ThumbBarSetImageList(IntPtr hwnd, IntPtr himl);
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[PreserveSig]
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void SetOverlayIcon(
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IntPtr hwnd,
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IntPtr hIcon,
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[MarshalAs(UnmanagedType.LPWStr)] string pszDescription);
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[PreserveSig]
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void SetThumbnailTooltip(
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IntPtr hwnd,
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[MarshalAs(UnmanagedType.LPWStr)] string pszTip);
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[PreserveSig]
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void SetThumbnailClip(
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IntPtr hwnd,
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IntPtr prcClip);
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// ITaskbarList4
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void SetTabProperties(IntPtr hwndTab, SetTabPropertiesOption stpFlags);
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}
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[GuidAttribute("56FDF344-FD6D-11d0-958A-006097C9A090")]
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[ClassInterfaceAttribute(ClassInterfaceType.None)]
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[ComImportAttribute()]
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internal class CTaskbarList { }
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}
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```
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- 使い方（下記はコンソールアプリケーション）
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```C#
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using System;
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using System.Diagnostics;
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namespace TeraTaskBarTooltip {
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class Program {
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private static ITaskbarList4 _taskbarList;
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static void Main(string[] args) {
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_taskbarList= (ITaskbarList4)new CTaskbarList();
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_taskbarList.HrInit();
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_taskbarList.SetThumbnailTooltip(Process.GetCurrentProcess().MainWindowHandle, "何でも\nOK");
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Console.WriteLine("aiueo");
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Console.Read();
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}
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}
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}
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```
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