16,470
社区成员
发帖
与我相关
我的任务
分享怎样在文档类中设置一个定时器
我想在在文档类中设置一个定时器,用API函数SetTimer(NULL,1,1000,TimerProc);可行?TimerProc 怎样定义?
...全文
请发表友善的回复…
发表回复
confideman2000 2003-10-20
- 打赏
- 举报
是文档类,没有m_hWnd!!!
leon_z 2003-10-20
- 打赏
- 举报
在WindowProc下截获WM_TIMER消息，不过第一个参数不能是NULL，要是这个WINDOWPROC所在窗口的m_hWnd
关于TimerProc见下文
TimerProc
The TimerProc function is an application-defined callback function that processes WM_TIMER messages. The TIMERPROC type defines a pointer to this callback function. TimerProc is a placeholder for the application-defined function name.
VOID CALLBACK TimerProc(
HWND hwnd, // handle to window
UINT uMsg, // WM_TIMER message
UINT_PTR idEvent, // timer identifier
DWORD dwTime // current system time
);
Parameters
hwnd
[in] Handle to the window associated with the timer.
uMsg
[in] Specifies the WM_TIMER message.
idEvent
[in] Specifies the timer's identifier.
dwTime
[in] Specifies the number of milliseconds that have elapsed since the system was started. This is the value returned by the GetTickCount function.
Return Values
This function does not return a value.
Requirements
Windows NT/2000: Requires Windows NT 3.1 or later.
Windows 95/98: Requires Windows 98.
Header: Declared in Winuser.h; include Windows.h.
关于TimerProc见下文
TimerProc
The TimerProc function is an application-defined callback function that processes WM_TIMER messages. The TIMERPROC type defines a pointer to this callback function. TimerProc is a placeholder for the application-defined function name.
VOID CALLBACK TimerProc(
HWND hwnd, // handle to window
UINT uMsg, // WM_TIMER message
UINT_PTR idEvent, // timer identifier
DWORD dwTime // current system time
);
Parameters
hwnd
[in] Handle to the window associated with the timer.
uMsg
[in] Specifies the WM_TIMER message.
idEvent
[in] Specifies the timer's identifier.
dwTime
[in] Specifies the number of milliseconds that have elapsed since the system was started. This is the value returned by the GetTickCount function.
Return Values
This function does not return a value.
Requirements
Windows NT/2000: Requires Windows NT 3.1 or later.
Windows 95/98: Requires Windows 98.
Header: Declared in Winuser.h; include Windows.h.
pxwzd123 2003-10-20
- 打赏
- 举报
帮你顶
