窗口查询 API
常用窗口查询 Win32 API
FindWindow Function
The FindWindow function retrieves a handle to the top-level window whose class name and window name match the specified strings. This function does not search child windows. This function does not perform a case-sensitive search.
To search child windows, beginning with a specified child window, use the FindWindowEx function.
Syntax
HWND FindWindow(
LPCTSTR lpClassName, LPCTSTR lpWindowName );
FindWindowEx Function
The FindWindowEx function retrieves a handle to a window whose class name and window name match the specified strings. The function searches child windows, beginning with the one following the specified child window. This function does not perform a case-sensitive search.
Syntax
HWND FindWindowEx(
HWND hwndParent, HWND hwndChildAfter, LPCTSTR lpszClass, LPCTSTR lpszWindow );
EnumWindows Function
The EnumWindows function enumerates all top-level windows on the screen by passing the handle to each window, in turn, to an application-defined callback function. EnumWindows continues until the last top-level window is enumerated or the callback function returns FALSE.
Syntax
BOOL EnumWindows(
WNDENUMPROC lpEnumFunc, LPARAM lParam );
EnumWindowsProc Function
The EnumWindowsProc function is an application-defined callback function used with the EnumWindows or EnumDesktopWindows function. It receives top-level window handles. The WNDENUMPROC type defines a pointer to this callback function. EnumWindowsProc is a placeholder for the application-defined function name.
Syntax
BOOL CALLBACK EnumWindowsProc(
HWND hwnd, LPARAM lParam );
EnumChildWindows Function
The EnumChildWindows function enumerates the child windows that belong to the specified parent window by passing the handle to each child window, in turn, to an application-defined callback function. EnumChildWindows continues until the last child window is enumerated or the callback function returns FALSE.
Syntax
BOOL EnumChildWindows(
HWND hWndParent, WNDENUMPROC lpEnumFunc, LPARAM lParam );
EnumChildProc Function
The EnumChildProc function is an application-defined callback function used with the EnumChildWindows function. It receives the child window handles. The WNDENUMPROC type defines a pointer to this callback function. EnumChildProc is a placeholder for the application-defined function name.
Syntax
BOOL CALLBACK EnumChildProc(
HWND hwnd, LPARAM lParam );
WindowFromPoint Function
The WindowFromPoint function retrieves a handle to the window that contains the specified point.
Syntax
HWND WindowFromPoint(
POINT Point );
EnumThreadWindows Function
The EnumThreadWindows function enumerates all nonchild windows associated with a thread by passing the handle to each window, in turn, to an application-defined callback function. EnumThreadWindows continues until the last window is enumerated or the callback function returns FALSE. To enumerate child windows of a particular window, use the EnumChildWindows function.
Syntax
BOOL EnumThreadWindows(
DWORD dwThreadId, WNDENUMPROC lpfn, LPARAM lParam );