怎么向窗口发送快捷键消息
如何向窗口发送快捷键消息
如何用PostMessage向一个固定窗口发送快捷键消息？
谢谢。
------解决方案--------------------
PostMessage四个参数
第一个窗口句柄
发送消息必须先知道窗口句柄
下面是MSDN的，自己看，如果看不懂，我给你讲意义也不大
PostMessage
The PostMessage function places (posts) a message in the message queue associated with the thread that created the specified window and returns without waiting for the thread to process the message.
To post a message in the message queue associate with a thread, use the PostThreadMessage function.
BOOL PostMessage(
HWND hWnd, // handle to destination window
UINT Msg, // message
WPARAM wParam, // first message parameter
LPARAM lParam // second message parameter
);
Parameters
hWnd
[in] Handle to the window whose window procedure is to receive the message. The following values have special meanings. Value Meaning
HWND_BROADCAST The message is posted to all top-level windows in the system, including disabled or invisible unowned windows, overlapped windows, and pop-up windows. The message is not posted to child windows.
NULL The function behaves like a call to PostThreadMessage with the dwThreadId parameter set to the identifier of the current thread.
Msg
[in] Specifies the message to be posted.
wParam
[in] Specifies additional message-specific information.
lParam
[in] Specifies additional message-specific information.
Return Values
If the function succeeds, the return value is nonzero.
If the function fails, the return value is zero. To get extended error information, call GetLastError.
Remarks
Messages in a message queue are retrieved by calls to the GetMessage or PeekMessage function.
Applications that need to communicate using HWND_BROADCAST should use the RegisterWindowMessage function to obtain a unique message for inter-application communication.
If you send a message in the range below WM_USER to the asynchronous message functions (PostMessage, SendNotifyMessage, and SendMessageCallback), its message parameters cannot include pointers. Otherwise, the operation will fail. The functions will return before the receiving thread has had a chance to process the message and the sender will free the memory before it is used.
Do not post the WM_QUIT message using PostMessage; use the PostQuitMessage function.
如何用PostMessage向一个固定窗口发送快捷键消息？
谢谢。
------解决方案--------------------
PostMessage四个参数
第一个窗口句柄
发送消息必须先知道窗口句柄
下面是MSDN的，自己看，如果看不懂，我给你讲意义也不大
PostMessage
The PostMessage function places (posts) a message in the message queue associated with the thread that created the specified window and returns without waiting for the thread to process the message.
To post a message in the message queue associate with a thread, use the PostThreadMessage function.
BOOL PostMessage(
HWND hWnd, // handle to destination window
UINT Msg, // message
WPARAM wParam, // first message parameter
LPARAM lParam // second message parameter
);
Parameters
hWnd
[in] Handle to the window whose window procedure is to receive the message. The following values have special meanings. Value Meaning
HWND_BROADCAST The message is posted to all top-level windows in the system, including disabled or invisible unowned windows, overlapped windows, and pop-up windows. The message is not posted to child windows.
NULL The function behaves like a call to PostThreadMessage with the dwThreadId parameter set to the identifier of the current thread.
Msg
[in] Specifies the message to be posted.
wParam
[in] Specifies additional message-specific information.
lParam
[in] Specifies additional message-specific information.
Return Values
If the function succeeds, the return value is nonzero.
If the function fails, the return value is zero. To get extended error information, call GetLastError.
Remarks
Messages in a message queue are retrieved by calls to the GetMessage or PeekMessage function.
Applications that need to communicate using HWND_BROADCAST should use the RegisterWindowMessage function to obtain a unique message for inter-application communication.
If you send a message in the range below WM_USER to the asynchronous message functions (PostMessage, SendNotifyMessage, and SendMessageCallback), its message parameters cannot include pointers. Otherwise, the operation will fail. The functions will return before the receiving thread has had a chance to process the message and the sender will free the memory before it is used.
Do not post the WM_QUIT message using PostMessage; use the PostQuitMessage function.