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MSG 结构体

包含线程消息队列的某消息信息。
 声明:
typedef struct tagMSG{
HWNDhwnd;
UINTmessage;
WPARAMwParam;
LPARAMlParam;
DWORDtime;
POINTpt;
 } MSG, *PMSG, *LPMSG;
成员
hwnd
类型:HWND
消息所属的窗口句柄。如果是线程消息,不是属于某一窗口,则此成员为NULL。

message
类型:UINT
消息标识符,应用程序仅能使用低16位,高16位被系统保留。

wParam
类型:WPARAM
消息附加信息,意义取决于message成员。

lParam
类型:LPARAM
消息附加信息,意义取决于message成员。

time
类型:DWORD
消息被发送的时间。

pt
类型:POINT
消息被发送时,光标相对屏幕的位置。
支持
最低桌面系统支持Windows 2000 Professional
头文件Winuser.h (已包含在Windows.h中)

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