Winapi.Messages.TWMMouseWheel

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Delphi

  TWMMouseWheel = record
    Msg: Cardinal;
    MsgFiller: TDWordFiller;
    Keys: SmallInt;
    WheelDelta: SmallInt;
    KeysWhellFiller: TDWordFiller;
    case Integer of
      0: (
        XPos: Smallint;
        YPos: Smallint;
        XYPosFiller: TDWordFiller);
      1: (
        Pos: TSmallPoint;
        PosFiller: TDWordFiller;
        Result: LRESULT);
  end;

C++

struct DECLSPEC_DRECORD TWMMouseWheel
{
public:
    unsigned Msg;
    short Keys;
    short WheelDelta;
public:
    union
    {
        struct
        {
            System::Types::TSmallPoint Pos;
            NativeInt Result;
        };
        struct
        {
            short XPos;
            short YPos;
        };
    };
};

Properties

Type Visibility Source Unit Parent
record
struct
public
Winapi.Messages.pas
Winapi.Messages.hpp
Winapi.Messages Winapi.Messages

Description

Windows message record for WM_MOUSEWHEEL.

For more information about WM_MOUSEWHEEL message, see the documentation in Windows Dev Center.

http://msdn.microsoft.com/library/en-us/windows/desktop/ms645617.aspx