c++ - Win32 : How to hide 3rd party windows in taskbar by hWnd

Question

我必须在第三方库中隐藏弹出窗口。

我已经用 SetWindowsHookEx 实现了 windows 钩子(Hook)的东西。并了解所有新创建的 hWnd(s)。我收听 HSHELL_WINDOWCREATED 回调并执行以下操作:

long style= GetWindowLong(hWnd, GWL_STYLE);
style &= ~(WS_VISIBLE);    // this works - window become invisible 

style |= WS_EX_TOOLWINDOW;   // flags don't work - windows remains in taskbar
style &= ~(WS_EX_APPWINDOW); 

SetWindowLong(hWnd, GWL_STYLE, style);      

在任务栏中隐藏新创建的窗口我做错了什么？

Answer 1

在使用SetWindowLong之前，先调用ShowWindow(hWnd, SW_HIDE)，然后调用SetWindowLong，再调用ShowWindow 再次像 ShowWindow(hWnd, SW_SHOW)。所以您的代码将如下所示:

long style= GetWindowLong(hWnd, GWL_STYLE);
style &= ~(WS_VISIBLE);    // this works - window become invisible 

style |= WS_EX_TOOLWINDOW;   // flags don't work - windows remains in taskbar
style &= ~(WS_EX_APPWINDOW); 

ShowWindow(hWnd, SW_HIDE); // hide the window
SetWindowLong(hWnd, GWL_STYLE, style); // set the style
ShowWindow(hWnd, SW_SHOW); // show the window for the new style to come into effect
ShowWindow(hWnd, SW_HIDE); // hide the window so we can't see it

这是来自 Microsoft's Website 的相关引用:

To prevent the window button from being placed on the taskbar, create the unowned window with the WS_EX_TOOLWINDOW extended style. As an alternative, you can create a hidden window and make this hidden window the owner of your visible window.

The Shell will remove a window's button from the taskbar only if the window's style supports visible taskbar buttons. If you want to dynamically change a window's style to one that doesn't support visible taskbar buttons, you must hide the window first (by calling ShowWindow with SW_HIDE), change the window style, and then show the window.