GetMessagePos function (winuser.h)

Retrieves the cursor position for the last message retrieved by the GetMessage function.

To determine the current position of the cursor, use the GetCursorPos function.

Syntax

DWORD GetMessagePos();

Return value

Type: DWORD

The return value specifies the x- and y-coordinates of the cursor position. The x-coordinate is the low order short and the y-coordinate is the high-order short.

Remarks

As noted above, the x-coordinate is in the low-order short of the return value; the y-coordinate is in the high-order short (both represent signed values because they can take negative values on systems with multiple monitors). If the return value is assigned to a variable, you can use the MAKEPOINTS macro to obtain a POINTS structure from the return value. You can also use the GET_X_LPARAM or GET_Y_LPARAM macro to extract the x- or y-coordinate.

Important  Do not use the LOWORD or HIWORD macros to extract the x- and y- coordinates of the cursor position because these macros return incorrect results on systems with multiple monitors. Systems with multiple monitors can have negative x- and y- coordinates, and LOWORD and HIWORD treat the coordinates as unsigned quantities.
 

Requirements

   
Minimum supported client Windows 2000 Professional [desktop apps only]
Minimum supported server Windows 2000 Server [desktop apps only]
Target Platform Windows
Header winuser.h (include Windows.h)
Library User32.lib
DLL User32.dll
API set ext-ms-win-ntuser-message-l1-1-1 (introduced in Windows 8.1)

See also

Conceptual

GetCursorPos

GetMessage

GetMessageTime

HIWORD

LOWORD

MAKEPOINTS

Messages and Message Queues

Other Resources

POINTS

Reference