@msdn=http://search.microsoft.com/search/results.aspx?qu=$$$ @pinvoke=http://pinvoke.net/$$$.htm Summary: The DrawAnimatedRects API !!!!C# Signature: [DllImport("user32.dll")] static extern bool DrawAnimatedRects(IntPtr hwnd, int idAni, [In] ref RECT lprcFrom, [In] ref RECT lprcTo); !!!!User-Defined Types: [IDANI_] !!!!Notes: Only the IDANI_CAPTION constant will result in any animation. Any other constants have not been implemented on any Windows platform! !!!!Tips & Tricks: Since only IDANI_CAPTION is implemented, to get the effect of IDANI_OPEN, simply swap the lprcFrom and lprcTo rectangles, but still specify the IDANI_CAPTION constant. !!!!Sample Code: /// <summary> /// This constant is not implemented on any Windows platform! /// </summary> public const System.Int32 IDANI_OPEN = 1; /// <summary> /// The window caption will animate from lprcFrom to lprcTo. /// </summary> public const System.Int32 IDANI_CAPTION = 3; [System.Runtime.InteropServices.StructLayout(System.Runtime.InteropServices.LayoutKind.Sequential)] struct RECT { public RECT(System.Drawing.Rectangle rectangle) { Left = rectangle.Left; Top = rectangle.Top; Right = rectangle.Right; Bottom = rectangle.Bottom; } public RECT(System.Drawing.Point location, System.Drawing.Size size) { Left = location.X; Top = location.Y; Right = location.X + size.Width; Bottom = location.Y + size.Height; } public System.Int32 Left; public System.Int32 Top; public System.Int32 Right; public System.Int32 Bottom; } [System.Runtime.InteropServices.DllImport("user32.dll")] static extern bool DrawAnimatedRects(System.IntPtr hwnd, int idAni, [System.Runtime.InteropServices.In] ref RECT lprcFrom, [System.Runtime.InteropServices.In] ref RECT lprcTo); [System.Runtime.InteropServices.DllImport("user32.dll", SetLastError = true)] static extern System.IntPtr FindWindow(string lpClassName, string lpWindowName); [System.Runtime.InteropServices.DllImport("user32.dll", SetLastError = true)] static extern System.IntPtr FindWindowEx(System.IntPtr hwndParent, System.IntPtr hwndChildAfter, string lpszClass, string lpszWindow); [System.Runtime.InteropServices.DllImport("user32.dll")] static extern bool GetWindowRect(System.IntPtr hWnd, out RECT lpRect); /// <summary> /// Show or hide a form with animation. /// </summary> /// <param name="form">The form reference to be animated.</param> /// <param name="show">If true the form will be animated as if opening, otherwise as if closing.</param> static public void ShowHideAnimated(System.Windows.Forms.Form form, System.Boolean show) { RECT from = new RECT(form.Location, form.Size); RECT to; System.IntPtr hWnd = FindWindowEx(FindWindow("Shell_TrayWnd", null), System.IntPtr.Zero, "TrayNotifyWnd", null); if (hWnd != System.IntPtr.Zero) { GetWindowRect(hWnd, out to); } else { to.Left = System.Windows.Forms.SystemInformation.VirtualScreen.Right - form.Width; to.Top = System.Windows.Forms.SystemInformation.VirtualScreen.Bottom - System.Windows.Forms.SystemInformation.CaptionHeight - (System.Windows.Forms.SystemInformation.FrameBorderSize.Height * 2); to.Right = System.Windows.Forms.SystemInformation.VirtualScreen.Right; to.Bottom = System.Windows.Forms.SystemInformation.VirtualScreen.Bottom; } if (show) { DrawAnimatedRects(form.Handle, IDANI_CAPTION, ref to, ref from); form.Show(); } else { form.Hide(); DrawAnimatedRects(form.Handle, IDANI_CAPTION, ref from, ref to); } } !!!!Alternative Managed API: [StructLayout(System::Runtime::InteropServices::LayoutKind::Sequential)] ref struct RECT { public: RECT() { } RECT(System::Drawing::Rectangle rectangle) { Left = rectangle.Left; Top = rectangle.Top; Right = rectangle.Right; Bottom = rectangle.Bottom; } RECT(System::Drawing::Point location, System::Drawing::Size size) { Left = location.X; Top = location.Y; Right = location.X + size.Width; Bottom = location.Y + size.Height; } System::Int32 Left; System::Int32 Top; System::Int32 Right; System::Int32 Bottom; }; [DllImport("user32.dll")] bool DrawAnimatedRects(int hwnd, int idAni, RECT^ lprcFrom, RECT^ lprcTo); [DllImport("user32.dll", SetLastError = true)] int FindWindow(String^ lpClassName, String^ lpWindowName); [DllImport("user32.dll", SetLastError = true)] int FindWindowEx(int hwndParent, int hwndChildAfter, String^ lpszClass, String^ lpszWindow); [DllImport("user32.dll")] bool GetWindowRect(int hWnd, RECT^ lpRect); static const int IDANI_OPEN = 1; static const int IDANI_CAPTION = 3; void ShowHideAnimated(bool show) { RECT^ from=gcnew RECT(this->Location, this->Size); RECT^ to=gcnew RECT(); int hWnd=FindWindowEx(FindWindow("Shell_TrayWnd", nullptr), 0, "TrayNotifyWnd", nullptr); if (hWnd != 0) { GetWindowRect(hWnd, to); } else { to->Left = System::Windows::Forms::SystemInformation::VirtualScreen.Rig ht - 32; to->Top = System::Windows::Forms::SystemInformation::VirtualScreen.Bot tom -32; to->Right = System::Windows::Forms::SystemInformation::VirtualScreen.Rig ht; to->Bottom = System::Windows::Forms::SystemInformation::VirtualScreen.Bot tom; } if (show) { DrawAnimatedRects(this->Handle.ToInt32(), IDANI_CAPTION, to, from); this->Show(); } else { this->Hide(); DrawAnimatedRects(this->Handle.ToInt32(), IDANI_CAPTION, from, to); } } !!!!Comment from admin@paradisim.net : When you post your examples, let people know if/who wrote the example that way Myself & Others can give credit to you if it gets re-used in our own code! :) Documentation: DrawAnimatedRects@msdn on MSDN
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