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我試圖將窗口最小化的矩形改爲使用shell鉤子到我的C#WPF應用程序中的HSHELL_GETMINRECT。在WndProc窗口掛鉤中更改lParam的值
此後Win32 C API for redirecting minimize animation 我能夠編組在lParam參數中返回的結構,但我無法更改它的值,以便窗口獲取新的矩形。
這是我迄今爲止的WndProc方法。
public IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
// If windows sends the HSHELL_GETMINRECT event, a window in the taskbar is minimizing or maximizing.
if (wParam.ToInt32() == WindowInterop.HSHELL_GETMINRECT)
{
var param = Marshal.PtrToStructure<WindowInterop.MinRectParam>(lParam);
var icon = FindIcon(param.hWnd);
var rect = new WindowInterop.SRect
{
Bottom = (short)(icon.Y + icon.Height),
Left = (short)icon.X,
Right = (short)(icon.X + icon.Width),
Top = (short)icon.Y
};
var newParam = new WindowInterop.MinRectParam
{
hWnd = param.hWnd,
Rect = rect
};
// As I understand it, this will only create a new IntPtr pointing to the structure,
// it won't write the new structure to the existing pointer's location.
Marshal.StructureToPtr(newParam, lParam, true);
handled = true;
}
return IntPtr.Zero;
}
實際上,'Marshal.StructureToPtr'會複製到指針指向的位置,所以它不會創建一個新的指針。你不應該轉向這種方法。嘗試將其更改爲false。這是必要的,但你可能會遇到更多問題。 –
剛剛嘗試過,它沒有馬上工作,但當我也添加'''返回新的IntPtr(1);'''它工作!謝謝。 –