/// <summary>
/// 根据句柄获取子句柄列表
/// </summary>
/// <param name="hwndParent">句柄</param>
/// <returns>子句柄列表</returns>
public static List <IntPtr> GetChildWindows(IntPtr hwndParent)
{
var childHandles = new List <IntPtr>();
var gcChildhandles = GCHandle.Alloc(childHandles);
try
{
var callback = new Win32Api.EnumWindowDelegate((hWnd, lParam) =>
{
var gcChandles = GCHandle.FromIntPtr(lParam);
// ReSharper disable once ConditionIsAlwaysTrueOrFalse
if (gcChandles == null || gcChandles.Target == null)
{
return(false);
}
var cHandles = gcChandles.Target as List <IntPtr>;
cHandles?.Add(hWnd);
return(true);
});
Win32Api.EnumChildWindows(hwndParent, callback, GCHandle.ToIntPtr(gcChildhandles));
}
finally
{
if (gcChildhandles.IsAllocated)
{
gcChildhandles.Free();
}
}
return(childHandles.Distinct().ToList());
}
public Task UpdateWindows()
{
if (_UpdateWindowsTask != null)
{
return(_UpdateWindowsTask);
}
_UpdateWindowsTask = Task.Run(() =>
{
var newWindows = new List <WindowData>();
Action <IntPtr> addWindow = windowHandle =>
{
var windowTitle = Win32Api.GetWindowTitle(windowHandle);
var windowIcon = GetWindowIcon(windowHandle);
windowIcon?.Freeze();
var flashing = GetFlashingWindowState(windowHandle);
newWindows.Add(new WindowData(windowHandle, windowIcon, windowTitle, flashing));
if (!_UsageHistory.ContainsKey(windowTitle.ToLower()))
{
_UsageHistory[windowTitle.ToLower()] = 0;
}
};
Win32Api.EnumWindowDelegate enumWindowCallback = (windowHandle, lParam) =>
{
try
{
if (IsAllowedWindow(windowHandle))
{
var currentProcessId = Win32Api.GetWindowProcessId(windowHandle);
var windowTitle = Win32Api.GetWindowTitle(windowHandle);
if (Process.GetCurrentProcess().Id != currentProcessId && !String.IsNullOrWhiteSpace(windowTitle))
{
addWindow(windowHandle);
}
}
}
catch
{
}
return(true);
};
Win32Api.EnumDesktopWindows(IntPtr.Zero, enumWindowCallback, IntPtr.Zero);
Common.RunFromSTAThread(() =>
{
Windows = SortWindows(newWindows.Select(window => new WindowDataViewModel(window)).ToList());
_UpdateWindowsTask = null;
});
});
return(_UpdateWindowsTask);
}
