Visual Basic Graphing example and source code adding charts and graphs to your VB6 software with ActiveX interface.

[ VB6 Client-Side EXE Development ]

For a later VB6 Win8 Tutorial, see Win8 VB6 or Access 2013

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  • Study the code to discover the ease of use.
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The following demonstrates how to create a Visual Basic 6 Charting and Graphing activex-ocx implementation. It discusses installation of activexs within Visual Studio, adding charting controls to the project, writing your first few lines of code, and shows the final chart in your visual basic software. 

Project / Components... menu Installation...

Adding Visual basic charts and graphs to the tool bar.

When installing the ProEssentials evaluation and/or product, the setup program installs the ProEssentials DLL and ActiveX Charting interfaces into the system directory. These files are:

PEGRP32F.DLL

ProEssentials Pro DLL
PEGO32F.OCX Graph Object
PESGO32F.OCX Scientific Graph Object
PE3DO32F.OCX 3D Scientific Graph Object
PEPSO32F.OCX Polar Object
PEPCO32F.OCX Pie Chart Object

PEGRPSF.DLL

ProEssentials Standard DLL
PEGOSF.OCX Graph Object
PESGOSF.OCX Scientific Graph Object
PE3DOSF.OCX 3D Scientific Graph Object
PEPSOSF.OCX Polar Object
PEPCOSF.OCX Pie Chart Object

The setup program also registers the ActiveXs with the operating system, which prepares Visual Basic for inclusion of ProEssentials charts. You can manually register an ActiveX with "REGSVR32.EXE" found in your system/system32 dir. You can also use this utility to manually un-register an ActiveX by using the "-u" command.

After installation, launch Visual Basic and create a new "Standard EXE" project.

Use the Project / Components... menu item to open the [Components] dialog.


Components... Dialog Adding ProEssentials to a VB project...
Visual Basic Charts Graphs in component dialog.

Within the [Components] Dialog, scroll down until you see the Gigasoft entries and select those shown in the left image. Note that the [Controls] tab is active.

Clicking the [OK] button will close the [Components] dialog and places those items selected charting controls into Visual Basic's ToolBox as shown.

Visual Basic Charts Graphs on tool bar.


Form1... Adding ProEssentials to a Form...
Visual Basic Graph in Visual Studio.

Pego1.Subsets = 2
Pego1.Points = 10
For s = 0 To 1
    For p = 0 To 9
       Pego1.YData(s, p) = 5 + Rnd * 5
    Next p
Next s
Pego1.MainTitle = "My Title"
Pego1.SubTitle = ""
Pego1.YAxisLabel = "My Data"
Pego1.XAxisLabel = ""
Pego1.SubsetLabels(0) = "Hello"
Pego1.SubsetLabels(1) = "World"
Pego1.BitmapGradientMode = True
Pego1.QuickStyle = PEQS_LIGHT_INSET
Pego1.FixedFonts = True
Pego1.LegendStyle = PELS_1_LINE_INSIDE_AXIS
Pego1.PEactions = REINITIALIZE_RESETIMAGE

Visual Basic Chart Click the "Pego" control from the ToolBox and then click and drag a rectangle selection on Form1's canvas.

Note, ProEssentials Std uses control name "PegoStd".

The adjacent image shows what you see. This represents the default state of a ProEssentials Graph. The default state has one subset with four data points. In the course of constructing your own charts, you'll set the properties Subsets and Points which define the quantity of data your chart will hold. You'll then pass data via the YData(subset, point) two dimensional property array. The following section shows example code of passing data. Note, if we were constructing a Scientific Graph (Pesgo), we'd also set XData(subset, point).

ProEssentials uses the terms Subsets and Points but you can think of these as Rows and Columns. Passing data is as simple as filling each Subset with Points worth of data.

Use Visual Basic's View / Code menu to open the Code Window. Then select [Form] from the top left drop-down combo box. The event combobox on the top right will switch to [Load]. Enter the code as shown. Writing this small amount of code will improve your understanding and demonstrate the auto-code completion features supported by ProEssentials.


Code Window... Code Comments...
Visual Basic Graph code in code window.

The first two lines set Subsets and Points. These define the amount of data you'll be passing.

Next, a nested For-Next loop passes random data into the YData(s, p) property array.

Next, MainTitle and SubTitle are set. Note that setting SubTitle to an empty string hides the subtitle.

The YAxisLabel and XAxisLabel are set similarly.

SubsetLabels(0) sets the first subset label. (1) sets the second subset label.

Next, we set various other properties controlling visual aspects.

Finally, PEactions is set to REINITIALIZE_RESETIMAGE which tells ProEssentials you're done setting properties.

Results... Congratulations...
Visual Basic Chart your software!

Use Visual Basic's Run / Start Menu (short cut F5) and you'll see the resulting form to the left. Congratulations, you've just completed your first Visual Basic charting / graphing implementation.

This example is very simple and you'll likely set other properties such as: Width/Height so that the control uses Form1's client area as needed.

PointLabels which will replace the "1,2,3..." along x axis.

SubsetLineTypes which controls line styles.

SubsetColors which controls line colors.

PlottingMethod which controls the type of chart created, Line, Bar, Area, Point, etc.

 

Online developer reference

Complete online technical reference to the ProEssentials product. Chapter 2's .NET Reference is the best mechanism to navigate the large quantity of properties and features.  Walk-Throughs of .NET charting in VB.NET, C#.NET, ASP, VC, VB6, and Delphi get you started quickly.

more Visual Basic Charting-Graphing, See Chapter 3

Online interactive demo using Visual Basic.Net

Financial, Engineering, Scientific, and Business examples give you an instant taste of ProEssentials' power. Built with our Visual Basic.Net charting controls and uses VBScript within the browser.

online Charting Demo

Letter from the President

Thank you for researching. Call, email and let's talk charting.

Visual Basic Charting Strengths