AxHost.PreProcessMessage(Message) AxHost.PreProcessMessage(Message) AxHost.PreProcessMessage(Message) AxHost.PreProcessMessage(Message) Method

定义

在调度键盘或输入消息之前,在消息循环内对它们进行预处理。Preprocesses keyboard or input messages within the message loop before they are dispatched.

public:
 override bool PreProcessMessage(System::Windows::Forms::Message % msg);
public override bool PreProcessMessage (ref System.Windows.Forms.Message msg);
override this.PreProcessMessage : Message -> bool
Public Overrides Function PreProcessMessage (ByRef msg As Message) As Boolean

参数

msg
Message Message Message Message

通过引用传递的 Message,表示要处理的消息。A Message, passed by reference, that represents the message to process. 可能的值有 WM_KEYDOWN、WM_SYSKEYDOWN、WM_CHAR 和 WM_SYSCHAR。The possible values are WM_KEYDOWN, WM_SYSKEYDOWN, WM_CHAR, and WM_SYSCHAR.

返回

如果消息已由控件处理,则为 true;否则为 falsetrue if the message was processed by the control; otherwise, false.

适用于