TdxChartMouseWheelAction.ModifierKeys Property

Specifies modifier keys required to execute the mouse action in addition to mouse wheel rotation.

Declaration

property ModifierKeys: TdxModifierKeys read; write;

Property Value

Type	Description
TdxModifierKeys	The set of modifier keys required to execute the mouse action in addition to mouse wheel rotation.

Remarks

Use the ModifierKeys property to define what modifier keys a user needs to hold down while rotating the mouse wheel. This property is particularly useful when you need to differentiate similar mouse actions (zoom and scroll operations, for example).

Property Values

The ModifierKeys property accepts a set of the following flags in any combination:

Flag	Description
TdxModifierKey.Alt	Users need to rotate the mouse wheel while holding down the Alt modifier key to execute the mouse action.
TdxModifierKey.Ctrl	Users need to rotate the mouse wheel while holding down the Ctrl modifier key to execute the mouse action.
TdxModifierKey.Shift	Users need to rotate the mouse wheel while holding down the Shift modifier key to execute the mouse action.

Note

TdxModifierKey is a scoped enumeration type. Use the type name together with a scope resolution token (. in Delphi or :: in C++Builder) followed by an enumeration value to refer to this value. For example, use TdxModifierKey.Ctrl (in Delphi) or TdxModifierKey::Ctrl (in C++Builder) to refer to the Ctrl value in code.

Default Value

The ModifierKeys property’s default value depends on the mouse wheel action type:

Scroll

The default value is [] (no modifier key is required).

Zoom

The default value is [TdxModifierKey.Ctrl] (only the Ctrl modifier key is required).