请大家给些思路，我需要通过一个应用程序来隐藏或者显示其它应用程序的窗口……（在线讨论）

[alfwolf]

如题。

[strip]

我有sample, 你拿多少分来换？

[alfwolf]

呵呵，老兄要多少？

[strip]

给email, 就这150了，我不贪心

[delphihero]

HWND hwnd=FindWindow(null,"qq登陆程序");
if(hwnd!=NULL)
WinExec(hwnd,SW_HIDE);

[strip]

离开了？？？

BOOL IsTaskbarWindow( HWND hwnd )
{
BOOL bReturn = FALSE;
BOOL bParent = (::GetParent( hwnd ) != NULL );
BOOL bOwner = (::GetWindow(hwnd, GW_OWNER) != 0);
BOOL bVisible = ::IsWindowVisible( hwnd );
BOOL bToolWindow = ( (::GetWindowLong(hwnd, GWL_EXSTYLE)&WS_EX_TOOLWINDOW) != 0 );
BOOL bAppWindow = ( (::GetWindowLong(hwnd, GWL_EXSTYLE)&WS_EX_APPWINDOW) != 0 );
if( !bParent && bVisible )
{
if( ( bOwner && bAppWindow ) || ( !bOwner && !bToolWindow) )
{
bReturn = TRUE;
}
}
return bReturn;
}

BOOL CALLBACK EnumWindowsProc( HWND hwnd, LPARAM lParam )
{
if( IsTaskbarWindow( hwnd ) )
{
char szClassName[255];
char szTitle[255];
GetClassName( hwnd, szClassName, 255 );
GetWindowText( hwnd, szTitle, 255 );
TRACE("%d.(%s)%s\n", aaa++, szClassName, szTitle );
}
return TRUE;
}

void PrintWindow( HWND hwnd )
{
char szClassName[255];
char szTitle[255];
GetClassName( hwnd, szClassName, 255 );
GetWindowText( hwnd, szTitle, 255 );
TRACE("(%s)%s\n", szClassName, szTitle );
}
然后调用EnumWindows( EnumWindowsProc, 0 );
你就可以得到所有的应用程序窗口了，和任务条上的一样
用ShowWindow( SW_SHOW )/ShowWindow( SW_HIDE )来隐藏和显示
用GetForegroundWindow把某个窗口送到前面来

[alfwolf]

明白了，谢谢

[strip]

阿蒙说的应该改为：
HWND hwnd=FindWindow(szClassName,szWindowName);
if(hwnd!=NULL)
{
ShowWindow( hwnd, SW_SHOW ); // SW_HIDE, SetForegroundWindow
}

如果是特定的窗口的话，用上面的方法，但是事先要知道szClassName, szWindowName(就是caption, title), 可以用spy++来看窗口的这两个值
另外，如果开了两个(qq)窗口的，只会返回找到的第一个，这个要注意

[shinka]

其实实现不困难，先找到要隐藏窗口的句柄，再使用一个API函数。ShowWindow

HWND hwnd=FindWindow(null,"这里是窗口名");
if(hwnd!=NULL)
ShowWindow(hwnd,SW_HIDE)；
...

ShowWindow(hwnd,SW_SHOW)；
...

其它的例如最小化显示，普通显示，请参考下面的参数：

Value Meaning
SW_HIDE Hides the window and activates another window.
SW_MAXIMIZE Maximizes the specified window.
SW_MINIMIZE Minimizes the specified window and activates the next top-level window in the Z order.
SW_RESTORE Activates and displays the window. If the window is minimized or maximized, Windows restores it to its original size and position. An application should specify this flag when restoring a minimized window.
SW_SHOW Activates the window and displays it in its current size and position.
SW_SHOWDEFAULT Sets the show state based on the SW_ flag specified in the STARTUPINFO structure passed to the CreateProcess function by the program that started the application.
SW_SHOWMAXIMIZED Activates the window and displays it as a maximized window.
SW_SHOWMINIMIZED Activates the window and displays it as a minimized window.
SW_SHOWMINNOACTIVE Displays the window as a minimized window. The active window remains active.
SW_SHOWNA Displays the window in its current state. The active window remains active.
SW_SHOWNOACTIVATE Displays a window in its most recent size and position. The active window remains active.
SW_SHOWNORMAL Activates and displays a window. If the window is minimized or maximized, Windows restores it to its original size and position. An application should specify this flag when displaying the window for the first time.

以上。