National Instruments 373392C-01 Uživatelský manuál stáhnout pdf (Strana 49)

Chapter 2 Measurement Studio .NET Class Libraries

You typically use an LED control, as shown in Figure 2-8, to indicate a

Boolean value on an application user interface.

Figure 2-8. LED Windows Forms Control in Square 3D Style

With the switch and LED controls and the classes that interface with the

controls, you can perform the following operations:

• Receive notification before or after the state of the control changes.

• Configure how the control behaves when you click it with the mouse

or press the spacebar when the control has focus.

• Configure the appearance of the control.

• Make the control background transparent.

• Configure the LED control to blink while it is on or off and configure

the rate at which the LED control blinks.

Tip For more information about using the switch and LED controls, refer to the Using the

Measurement Studio Windows Forms Switch and LED .NET Controls section in the

NI Measurement Studio Help.

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National Instruments 373392C-01 Uživatelský manuál Strana 49