Copies the text of the specified window's title bar (if it has one) into a buffer. If the specified window is a control, the text of the control is copied. However, GetWindowText cannot retrieve the text of a control in another application.
int WINAPI GetWindowText( _In_ HWND hWnd, _Out_ LPTSTR lpString, _In_ int nMaxCount );
- hWnd [in]
- Type: HWND
- A handle to the window or control containing the text.
- lpString [out]
- Type: LPTSTR
- The buffer that will receive the text. If the string is as long or longer than the buffer, the string is truncated and terminated with a null character.
- nMaxCount [in]
- Type: int
- The maximum number of characters to copy to the buffer, including the null character. If the text exceeds this limit, it is truncated.
If the function succeeds, the return value is the length, in characters, of the copied string, not including the terminating null character. If the window has no title bar or text, if the title bar is empty, or if the window or control handle is invalid, the return value is zero. To get extended error information, call GetLastError.
This function cannot retrieve the text of an edit control in another application.