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This article mainly introduces "the usage of visual properties of VB language controls". In daily operation, I believe that many people have doubts about the usage of visual properties of VB language controls. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful for you to answer the doubts about the usage of visual properties of VB language controls. Next, please follow the editor to study!

Today, let's learn about the display or hidden properties of the control to achieve the effect of a word flashing.

Effect picture

We need to control the word "burst" to flash. We can first use the click of the "simulate" button to manually control the visible property to control whether the word is displayed or hidden.

I. the visual properties of the control

Control the property that the control hides or displays: visible

Visible translated into: visual

The visible attribute value is: true

The invisible attribute value is: false

If you need to control whether to show or hide, we need to judge the visible property of the control. The idea is, after clicking the "Simulation" button, determine that if the visible property of the label control is true, then set it to false, otherwise set it to true. Review the format of the if statement.

Format of the if statement:

Usage 1:

If conditional then

Here is the code executed in accordance with the conditions

Endif

Usage 2:

If conditional then

Here is the code executed in accordance with the conditions

Else

Code that does not meet the conditions

Endif

Our program in this example needs to use "usage 2".

We can view the current value of the control through print, preferably through code debugging to see how the program is running.

An example of the visible property of an output control: print label1.visible

Second, clock control learning

Clock control: timer

Purpose: controls how often the code is executed.

Question: what is the effect of double-clicking the clock control?

The following code is automatically generated:

Private Sub Timer1_Timer ()

Here is the code to be executed at regular intervals

End sub

The usage properties of the clock control timer are parsed as follows:

1.interval attribute

Controls how often the clock control executes, using the property interval control.

The time unit of the interval property is millisecond

1 second = 1000 Ms

Half a second = 500 milliseconds

2.enabled attribute

The property that controls whether the clock control is available is: enabled

The enabled attribute value of true indicates that the clock control is available

The enabled attribute value of false indicates that the clock control is not available

By default, the value of the interval of the clock control timer is 0, then the value of the enabled property of the clock is true, and the clock control is not available.

The knowledge source code of this section:

Form1 code

Private Sub Command1_Click () Form2.ShowEnd Sub

Form2 Code:

Private Sub Command1_Click () Print Label1.Visible

End Sub

Private Sub Timer1_Timer () If Label1.Visible = True Then Label1.Visible = FalseElse Label1.Visible = TrueEnd IfEnd Sub

At this point, the study on the use of visual properties of VB language controls is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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