 Private Sub ' Объявляем API
Private Declare Function BitBlt Lib "gdi32" (ByVal hDestDC As Long, ByVal X As Long, ByVal Y As Long, ByVal nWidth As Long, ByVal nHeight As Long, ByVal hSrcDC As Long, ByVal xSrc As Long, ByVal ySrc As Long, ByVal dwRop As Long) As Long
Dim X As Long, Y As Long
 
Private Declare Function TextOut Lib "gdi32" Alias "TextOutA" (ByVal hdc As Long, ByVal X As Long, ByVal Y As Long, ByVal lpString As String, ByVal nCount As Long) As Long
Private Declare Function Ellipse Lib "gdi32" (ByVal hdc As Long, ByVal X1 As Long, ByVal Y1 As Long, ByVal X2 As Long, ByVal Y2 As Long) As Long
 
Private Sub Form_Load()
Draw ' Запускаем функцию
Me.Picture = LoadPicture("") 'c:\2.bmp
X = 0
Y = 0
End Sub
 
Function Draw() ' Функция Draw
Form1.Cls ' Очищаем форму
' При помощи функции BitBlt берем картиннку из Picture1(ширина и высота картинки равна ширине и высоте Picture1), и начинаем рисовать ее на форме с координатами x и y
BitBlt Form1.hdc, X, Y, Picture1.ScaleWidth, Picture1.ScaleHeight, Picture1.hdc, 0, 0, vbSrcCopy
 
Me.FontSize = 24
TextOut Form1.hdc, 10, 10, "12345", 5
Ellipse Me.hdc, 100, 100, 300, 300
 
Form1.Refresh ' Обновляем форму(при использование свойства AutoRedraw = True, форму надо всегда обновлять...)
SavePicture Form1.Image, "c:\1.bmp"
End Function
 
Private Sub Form_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single)
Form1.Cls ' Очищаем форму
Me.FontSize = 24
TextOut Form1.hdc, X, Y - 24, "12345", 5
Form1.Refresh
 
Me.Picture = Me.Image
Draw
'Clipboard.Clear
'Clipboard.SetData Me.Image
'Me.Picture = Clipboard.GetData
 
'SavePicture Form1.Image, "c:\1.bmp"
'Me.Picture = LoadPicture("c:\1.bmp")
End Sub
 
Private Sub Timer1_Timer()
' Перемещаем картинку в право на 1 пиксель
X = X + 1
' Опускаем ее вниз
Y = Y + 1
' Повторяем функцию Draw
Draw
End Sub

created 4 years ago

Visual basic (VB.net) Online Compiler

Write, Run & Share VB.net code online using OneCompiler's VB.net online compiler for free. It's one of the robust, feature-rich online compilers for VB.net language, running on the latest version 16. Getting started with the OneCompiler's VB.net compiler is simple and pretty fast. The editor shows sample boilerplate code when you choose language as VB.net. OneCompiler also has reference programs, where you can look for the sample code to get started with.

Read input from STDIN in VB.net

OneCompiler's VB.net online editor supports stdin and users can give inputs to programs using the STDIN textbox under the I/O tab. Following is a sample VB.net program which takes name as input and prints hello message with your name.

Public Module Program
	Public Sub Main(args() As string)
	 Dim name as String = Console.ReadLine()    ' Reading input from STDIN
   Console.WriteLine("Hello " & name)           ' Writing output to STDOUT
	End Sub
End Module

About VB.net

Visual Basic is a event driven programming language by Microsoft, first released in the year 1991.

Key Features

Beginner's friendly language.
Simple and object oriented programming language.
User friendly language and easy to develop GUI based applications.

Syntax help

Variables

Variable is a name given to the storage area in order to identify them in our programs.

Simple syntax of Variable declaration is as follows

Dim variableName [ As [ New ] dataType ] [ = initializer ]

Variable initialization

variableName = value

Conditional Statements

1. If

If condition-expression Then 
    'code
End If

2. If-else

If(conditional-expression)Then
   'code if the conditional-expression is true 
Else
  'code if the conditional-expression is false 
End If

3. If-else-if ladder

If(conditional-expression)Then
   'code if the above conditional-expression is true 
Else If(conditional-expression) Then
        'code if the above conditional-expression is true 
    Else
        'code if the above conditional-expression is false 
End If

4. Nested-If

If(conditional-expression)Then
   'code if the above conditional-expression is true
   If(conditional-expression)Then
         'code if the above conditional-expression is true 
   End If
End If

5. Select Case

Select [ Case ] expression
   [ Case expressionlist
      'code ]
   [ Case Else
      'code ]
End Select

Loops

1. For..Next

For counter [ As datatype ] = begin To end [ Step step ]
   'code
   [ Continue For ]
   'code
   [ Exit For ]
   'code
Next [ counter ]

2. For..Each

For Each element [ As datatype ] In group
   'code
   [ Continue For ]
   'code
   [ Exit For ]
   'code
Next [ element ]

3. While

While conditional-expression
   'Code 
   [ Continue While ]
   'Code
   [ Exit While ]
   'Code
End While

4. Do-while

Do { While | Until } conditional-expression
   'Code
   [ Continue Do ]
   'Code
   [ Exit Do ]
   'Code
Loop

Do
   'Code
   [ Continue Do ]
   'Code
   [ Exit Do ]
   'Code
Loop { While | Until } conditional-expression

Procedures

Procedure is a sub-routine which contains set of statements. Usually Procedures are written when multiple calls are required to same set of statements which increases re-usuability and modularity.

Procedures are of two types.

1. Functions

Functions return a value when they are called.

[accessModifiers] Function functionName [(parameterList)] As returnType
   'code
End Function

2. Sub-Procedures

Sub-procedures are similar to functions but they don't return any value.

Sub ProcedureName (parameterList)
'Code
End Sub