如何能够优雅地实现窗口置顶后不能被其他顶层窗口覆盖？
WIN10系统自带的任务管理器中，设置“置于顶层”后无法被其他置顶窗口覆盖（仅WIN10,WIN7会被覆盖），这和我期望的完美吻合，但不知如何实现
之前尝试过失去焦点时AttachThreadInput其他顶层窗口后，再SetForegroundWindow自己，具体代码如下：
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
int APIENTRY wWinMain(_In_ HINSTANCE hInstance,
_In_opt_ HINSTANCE hPrevInstance,
_In_ LPWSTR lpCmdLine,
_In_ int nCmdShow)
{
WNDCLASSEXW wcex;
wcex.cbSize = sizeof(WNDCLASSEX);
wcex.style = CS_HREDRAW | CS_VREDRAW;
wcex.lpfnWndProc = WndProc;
wcex.cbClsExtra = 0;
wcex.cbWndExtra = 0;
wcex.hInstance = hInstance;
wcex.hIcon = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_TOPWNDTEST));
wcex.hCursor = LoadCursor(nullptr, IDC_ARROW);
wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
wcex.lpszMenuName = NULL;
wcex.lpszClassName = L"TopWndTest";
wcex.hIconSm = LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL));
RegisterClassExW(&wcex);
HWND hWnd = CreateWindowExW(WS_EX_TOPMOST, L"TopWndTest", L"这是一个置顶窗口", WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, CW_USEDEFAULT, 600, 400, nullptr, nullptr, hInstance, nullptr);
if (!hWnd)
return FALSE;
ShowWindow(hWnd, nCmdShow);
UpdateWindow(hWnd);
MSG msg;
while (GetMessage(&msg, nullptr, 0, 0))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return (int) msg.wParam;
}
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WM_DESTROY:
PostQuitMessage(0);
break;
case WM_KILLFOCUS:
{
HWND hForegdWnd = GetForegroundWindow();
DWORD dwForegdWndThreadID = GetWindowThreadProcessId(hForegdWnd, NULL);
DWORD dwThreadID = GetCurrentThreadId();
AttachThreadInput(dwThreadID, dwForegdWndThreadID, TRUE);
SetForegroundWindow(hWnd);
SetFocus(hWnd);
AttachThreadInput(dwThreadID, dwForegdWndThreadID, FALSE);
break;
}
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
return 0;
}
但上述方法有较多局限且不够优雅：1、影响其他窗口消息；2、效率低拖动时闪烁；3、仍然会被WIN10任务管理器覆盖
有没大牛对此有研究过，指点一二
