## siKeyboardState

### Description

Keyboard modifier states

### C# Syntax

    siKeyboardState.siShiftMask                                                 // 1

    siKeyboardState.siCtrlMask                                                  // 2

    siKeyboardState.siAltMask                                                   // 4

Constant | Value | Description
--- | --- | ---
siShiftMask | 1 | SHIFT key bit mask.
siCtrlMask | 2 | CTRL key bit mask.
siAltMask | 4 | ALT key bit mask.

### Applies To

GetKeyboardState OnKeyDown ShiftMask Context Attribute OnKeyUp ShiftMask Context Attribute OnEvent callback