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 MSG

The MSG structure contains message information from a thread's message queue.

Syntax

    typedef struct {
        HWND hwnd;
        UINT message;
        WPARAM wParam;
        LPARAM lParam;
        DWORD time;
        POINT pt;
    } MSG, *PMSG;

Members

• hwnd
  Handle to the window whose window procedure receives the message. hwnd is NULL when the message is a thread message.
• message
  Specifies the message identifier. Applications can only use the low word; the high word is reserved by the system.
• wParam
  Specifies additional information about the message. The exact meaning depends on the value of the message member.
• lParam
  Specifies additional information about the message. The exact meaning depends on the value of the message member.
• time
  Specifies the time at which the message was posted.
• pt
  Specifies the cursor position, in screen coordinates, when the message was posted.

Structure Information

• Header Declared in Winuser.h, include Windows.h
• Minimum operating systems Windows 95, Windows NT 3.1

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Notebook exported on Monday, 7 July 2008, 18:56:50 PM Eastern Daylight Time