VC中调用外部程序

UINT WinExec(
LPCSTR lpCmdLine,
  UINT uCmdShow);

其中nCmdShow [in] Specifies how the window is to be shown. This parameter is ignored the first time an application calls ShowWindow, if the program that launched the application provides a STARTUPINFO structure. Otherwise, the first time ShowWindow is called, the value should be the value obtained by the WinMain function in its nCmdShow parameter. In subsequent calls, this parameter can be one of the following values. SW_FORCEMINIMIZE Windows 2000/XP: Minimizes a window, even if the thread that owns the window is not responding. This flag should only be used when minimizing windows from a different thread. 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, the system 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_ value 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. This value is similar to SW_SHOWMINIMIZED, except the window is not activated. SW_SHOWNA Displays the window in its current size and position. This value is similar to SW_SHOW, except the window is not activated. SW_SHOWNOACTIVATE Displays a window in its most recent size and position. This value is similar to SW_SHOWNORMAL, except the window is not actived. SW_SHOWNORMAL Activates and displays a window. If the window is minimized or maximized, the system restores it to its original size and position. An application should specify this flag when displaying the window for the first time.