What are the members of MGS structure and utility of each members?

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

MSG Structure definition:

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

Members and their description:

• hwnd - Handle to the window whose window procedure receives the message.
• message - Specifies the message number.
• 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.

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