VB design simple applet, vb program design

VB design.

Introduction. What is required.

The task is:

On the desktop, double-click the program with the left mouse button, on the main interface of VB6 that opens, the left is the tool menu bar, click the label button, on the form1 window, draw a label1, and then change the name on its properties window, such as caption as the first number, as shown in the figure below.

Then, in the same way, draw the second number on the form1 window, click the text box button in the left tool menu bar, and draw it. On the text attribute of the text box property bar, delete text1, that is, clear the data, as shown in the following figure.

Then, repeatedly use the first step and the second step to make the interface as shown in the figure, and learning requires repeated practice, and continuous improvement in practice. Here is the simple addition procedure, as shown in the image below.

Then, after the interface of the addition program is ready, you can't perform the addition operation, you must also draw a command button on the form1 window, click the command button in the left tool menu bar, and draw it. Then change the caption name to calculation in the properties window, as shown in the following figure.

Then, the program looks ready, click the Run button as shown in the image, the form1 window pops up, enter the numbers 3 and 6, and click calculate. However, the results did not appear, as shown in the figure below.

Finally, the first 5 steps are just the interface of the program, and if you want the program to produce results, you must add some**, since it is a simple program, just add one line**. Double-click the command button and enter the following in the ** window: =val( +val(, then click Run, enter the number, click Calculate, and the result will appear, as shown in the following figure.

VB is the Visual Basic programming language.

Writing a computer program requires the use of a computer programming language. Computer programming languages are the bridge between humans and computers. Just like human languages, there are many computer programming languages.

At present, the most widely used languages are "C++", "Pascal", "Basic", etc. Among the many computer programming languages, the basic language is the easiest to learn and use.

Basic is the abbreviation of Beginner's All Purpose Symbolic Instruction Code, which means universal symbolic instruction for beginners**, and has always been the preferred language for getting started with programming.

In 1991, Visual Basic (VB) was launched, which is the third generation of BASIC, which not only inherits the advantages of BASIC language that is easy to learn and use, but also adds graphical interface design tools. It simplifies the process of writing complex window programs, allowing the programmer to focus more on the problem-solving process.

Oh, I won't either, the egg hurts.

private sub command1_click()static n as long, m as longm = val(text2)

n = n + 1

if text1 = "psw123" thenmsgbox "The password is correct", vbexclamation, "Sign in"

n = 0else

if n >= m then

msgbox n & "Please exit if you have entered an error", vbexclamation, "Sign in"

endelse

msgbox "Section" & n & "The secondary password is incorrect, please re-enter it", vbexclamation, "Sign in"

end if

end if

end sub

private sub form_load()= "Password:"

Number of times a password is allowed:"

OK" "Sign in"

text1 = ""

text2 = 3

end sub

Question 2:

x = 1if x = fix(x \ 2) *2 then msgbox "It's an even number" else msgbox "It's an odd number"