MSG structure (winuser.h)
Contains message information from a thread's message queue.
Syntax
typedef struct tagMSG {
HWND hwnd;
UINT message;
WPARAM wParam;
LPARAM lParam;
DWORD time;
POINT pt;
DWORD lPrivate;
} MSG, *PMSG, *NPMSG, *LPMSG;
Members
hwnd
Type: HWND
A handle to the window whose window procedure receives the message. This member is NULL when the message is a thread message.
message
Type: UINT
The message identifier. Applications can only use the low word; the high word is reserved by the system.
wParam
Type: WPARAM
Additional information about the message. The exact meaning depends on the value of the message member.
lParam
Type: LPARAM
Additional information about the message. The exact meaning depends on the value of the message member.
time
Type: DWORD
The time at which the message was posted.
pt
Type: POINT
The cursor position, in screen coordinates, when the message was posted.
lPrivate
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 2000 Professional [desktop apps | UWP apps] |
| Minimum supported server | Windows 2000 Server [desktop apps | UWP apps] |
| Header | winuser.h (include Windows.h) |
See also
Conceptual
Reference