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WM_MOUSEMOVE (Compact 2013)

3/28/2014

This message is posted to a window when user moves the mouse while pressing the left mouse button or moves the stylus while the tip is down. If another window does not capture the mouse stylus input, the OS posts the message to the window that contains the cursor or the stylus tip. If another window captures the mouse or stylus input, the OS posts the message to the window that has the capture.

Syntax

WM_MOUSEMOVE fwKeys = wParam; 
    xPos = LOWORD(lParam); 
    yPos = HIWORD(lParam);

Parameters

  • fwKeys
    Indicates the mouse buttons and keys that the user pressed. The following table shows the possible values, which can be combined.

    Value

    Description

    MK_CONTROL

    The user pressed the CTRL key.

    MK_LBUTTON

    The user pressed the left mouse button.

    MK_SHIFT

    The user pressed the SHIFT key.

  • xPos
    Value of the low-order word of lParam. Specifies the x-coordinate of the cursor, relative to the upper-left corner of the client area.
  • yPos
    Value of the high-order word of lParam. Specifies the y-coordinate of the cursor, relative to the upper-left corner of the client area.

Requirements

Header

windows.h

See Also

Reference

Mouse Messages
GetCapture
SetCapture