Walk-through, source-code of adding delphi charts and graphs to your EXE via VCL interface and pascal language.

[ Delphi Client-Side EXE Development ]

The following demonstrates your first ProEssentials VCL Delphi Chart implementation. Though first...

  • See the new v8 demo (only 15 meg and uninstalls no problem.)
  • Charting Demo with three EXEs based on WPF, WinForm and native DLL.
  • Size, Shape, Right Click, Export, Zoom (especially date and log scales), Pan, and Rotate.
  • Study the code to discover the ease of use.
  • Your company, team, vendors, and end-users deserve the best.
See the demo...
Delphi chart for finance engineering and  more Delphi Chart 3d surface scatter wireframe terrain

 

Installing into Delphi is pointing Delphi to the package file gigasoft.dpk.

Open Gigasoft.dpk... Installation...



When running the ProEssentials setup, the setup program installs the ProEssentials DLL into system32 or SysWow64 on 64 bit systems. It also installs the ProEssentials VCL interfaces into C:\ProEssentials8\Delphi. Your relevant files are:

PEGRP32F.DLL

ProEssentials Pro DLL
GIGASOFT.DPK Delphi Package
PEGRPAPI.PAS ProEssentials Constants and Declarations
PEGVCL.PAS Graph Object
PESGVCL.PAS Scientific Graph Object
PE3DVCL.PAS 3D Scientific Graph Object
PEPSVCL.PAS Polar Object
PEPCVCL.PAS Pie Chart Object

PEGRPSF.DLL

ProEssentials Standard DLL
   

After setup completes, use the Delphi menus File / Close All and then File / Open to open the file "GIGASOFT.DPROJ" found in the C:\ProEssentials8\Delphi directory. You will see a project pane as shown to the left. Right click near the top "gigasoft.bpl" and select Install. The PAS interfaces are compiled and ProEssentials components installed into the "Additional" tab. We provide the PAS source incase you want to tinker with the interfaces.

Tools / Options... Dialog

After the components are installed into the Delphi IDE, use the File / Close All menu item and save the "Gigasoft" package when prompted.

Use the File / New menu item to create a new VCL Forms Application project.

Use the Tools / Options... menu to open the "Delphi Options" Dialog as shown to the left. Add "C:\ProEssentials8\Delphi" to the "Library path" field and select "OK".

Repeat the library path setting for 64-bit Windows Platform if 64 bit is of interest.

Form1... Adding ProEssentials to a Form...

Click the PEGraph control from the Additional ToolBox and then click and drag a rectangle selection on Form1's canvas. Size the vcl chart control as needed.

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 (PESGraph1), 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.

Unit1.pas...
Use Delphi's Object Inspector to add the TForm1 FormShow event handler to the project.

Double clicking OnShow will auto generate this handler.


Enter the code as shown below. Try to write a few lines that use enums to see Delphi's intellisense. For example typing PEGraph.PlottingMethod : should prompt the ePlottingMethod enum. If this does not work, or Pegvcl and PEGraph1 is not recognized, the Library Path setting set above likely had a mistake.

PEGraph1.MainTitle := 'Hello World';
PEGraph1.SubTitle := '';
PEGraph1.Subsets := 2;
PEGraph1.Points := 6;
PEGraph1.YData[0, 0] := 10; PEGraph1.YData[0, 1] := 30;
PEGraph1.YData[0, 2] := 20; PEGraph1.YData[0, 3] := 40;
PEGraph1.YData[0, 4] := 30; PEGraph1.YData[0, 5] := 50;
PEGraph1.YData[1, 0] := 15; PEGraph1.YData[1, 1] := 63;
PEGraph1.YData[1, 2] := 74; PEGraph1.YData[1, 3] := 54;
PEGraph1.YData[1, 4] := 25; PEGraph1.YData[1, 5] := 34;
PEGraph1.PointLabels[0] := 'Jan'; PEGraph1.PointLabels[1] := 'Feb';
PEGraph1.PointLabels[2] := 'Mar'; PEGraph1.PointLabels[3] := 'Apr';
PEGraph1.PointLabels[4] := 'May'; PEGraph1.PointLabels[5] := 'June';
PEGraph1.SubsetLabels[0] := 'For .Net Framework';
PEGraph1.SubsetLabels[1] := 'or MFC, ActiveX, VCL';
PEGraph1.YAxisLabel := 'Simple Quality Rendering';
PEGraph1.SubsetColors[0] := PEGraph1.PEargb(60, 0, 180, 0);
PEGraph1.SubsetColors[1] := PEGraph1.PEargb(180, 0, 0, 130);
PEGraph1.BitmapGradientMode := false;
PEGraph1.QuickStyle := gLightShadow;
PEGraph1.GraphPlusTable := gGraphPlusTable;
PEGraph1.DataPrecision := gNoDecimals;
PEGraph1.LabelBold := true;
PEGraph1.PlottingMethod := gBar;
PEGraph1.GradientBars := 8;
PEGraph1.BarGlassEffect := true;
PEGraph1.LegendLocation := gLegendLeft;
PEGraph1.DataShadows := gWithThreeD;
PEGraph1.FontSize := gLarge;
PEGraph1.PrepareImages := true;
PEGraph1.CacheBmp := true;
PEGraph1.RenderEngine := gDirect2D;
PEGraph1.AntiAliasGraphics := true;
PEGraph1.AntiAliasText := true;
PEGraph1.AllowDataHotSpots := true;
PEGraph1.PEactions := gReinitAndReset;

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

Subsets and Points define the amount of data you'll be passing.

Next, we pass some random data into the YData[s,p] two dimensional property array.

PointLabels[0] sets the first data point label located below axis.

SubsetLabels[0] sets the first subset label.

Next, we set various other properties controlling visual aspects, and enable flicker free updates with PrepareImages.

Finally PEactions is set to gReinitAndReset which tells ProEssentials to initialize and resetimage the image, in other words, you're done setting properties.

Your code window will look similar to below...

Results... Congratulations...
Delphi vcl chart

Run your project and you'll see the resulting form.

Congratulations, you've just completed your first Delphi / ProEssentials implementation.

 

Online developer reference

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

learn more about Delphi Charts, see Chapter 4

Online interactive demo

Financial, Engineering, Scientific, and Business examples give you an instant taste of ProEssentials' power.

view our online Charting Demo

Letter from the President

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

Thank you.