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Overview

TeeTree can be used in two ways:
  1. Design-time installation - Install packages in the IDE for visual component access
  2. Code-only usage - Use TeeTree components programmatically without IDE installation
Installation is optional. You can use TeeTree entirely by code without installing any packages.

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Code-Only Usage

To use TeeTree without installation, simply reference the units in your code: 
uses
  TeeTree; // VCL version

var
  Tree1: TTree;
begin
  Tree1 := TTree.Create(Self);
  Tree1.Parent := Self;
  Tree1.Align := alClient;
end;

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Design-Time Installation

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Prerequisites

1

Determine Your TeeChart Version

TeeTree requires TeeChart. Check which version you have:
  • TeeChart Pro - Use packages in Sources/Packages/Pro
  • TeeChart Lite - Use packages in Sources/Packages/Lite (free version included with RAD Studio)
If you’re unsure, check if you have a licensed copy of TeeChart Pro. Otherwise, use the Lite packages.
2

Locate Package Files

Navigate to the appropriate folder:
Sources/Packages/Lite/TeeTree_Lite.groupproj
or
Sources/Packages/Pro/TeeTree_Pro.groupproj
3

Open Package Group

Open the .groupproj file in RAD Studio. You’ll see multiple packages:
  • Runtime packages (VCL and FMX)
  • DclVCL - VCL design-time package
  • DclFMX - FireMonkey design-time package
4

Install VCL Package

  1. Right-click the DclVCL package in Project Manager
  2. Select Install
  3. Wait for compilation and installation to complete
Install VCL Package
5

Install FMX Package (Optional)

If you’re developing FireMonkey applications:
  1. Right-click the DclFMX package
  2. Select Install
  3. Wait for compilation and installation to complete

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Verify Installation

After installation, verify TeeTree is available:
1

Create New VCL Application

File → New → VCL Forms Application
2

Find TTree Component

Open the Component Palette and look for TTree component in the TeeTree tab.TTree in Component Palette
3

Place Component on Form

Double-click TTree or drag it onto your form. The component should appear and be ready to use.

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Configure Library Paths

You must configure library paths for compilation to work properly.
Add TeeTree source paths to your project or global library paths:
1

Global Library Configuration (Recommended)

  1. Go to Tools → Options
  2. Navigate to Language → Delphi → Library
  3. Select your platform (Win32, Win64, etc.)
  4. Click the […] button next to Library path
  5. Add the TeeTree sources path:
C:\TeeTree\Sources
Library Path Configuration
2

Add Namespace Prefixes

In the same Library configuration:
  1. Find Unit scope names
  2. Add the following prefixes (if not already present):
VclTee;FMXTee
Namespace Configuration

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Per-Project Configuration

Alternatively, configure paths per project:
  1. Project → Options
  2. Building → Delphi Compiler
  3. Add to Search Path:
$(TeeTreePath)\Sources

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Optional: TeeChart Lite Update

For RAD Studio 13.0 Florence users, install the free TeeChart Lite update:

Download TeeChart Lite Patch

Optional performance and compatibility update for RAD 13.0 Florence

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FireMonkey Verification

For FireMonkey applications:
1

Create FMX Application

File → New → Multi-Device Application
2

Find TTree Component

The TTree component should appear in the Component Palette.FMX TTree Component
3

Test on Multiple Platforms

TeeTree supports:
  • Windows (32-bit and 64-bit)
  • macOS (Intel and Apple Silicon)
  • iOS (Simulator and Device)
  • Android (ARM32 and ARM64)

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Troubleshooting

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Package Compilation Errors

Solution: Ensure you’re using the correct package group:
  • If you have TeeChart Pro, use Sources/Packages/Pro
  • If you have TeeChart Lite (included with RAD Studio), use Sources/Packages/Lite
Solution: Add VclTee and FMXTee to Unit scope names in Library settings
Solution: Select the correct platform target (Win32/Win64) that matches your RAD Studio edition

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Runtime Errors

Solution: Ensure Parent property is set and component has valid bounds:
Tree1.Parent := Self;
Tree1.Align := alClient; // or set specific bounds
Solution: Ensure the Tree component is fully created before adding nodes:
Tree1 := TTree.Create(Self);
Tree1.Parent := Self;
// Now safe to add nodes
Tree1.AddRoot('My Node');

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Next Steps

Now that TeeTree is installed, proceed to the Quick Start Guide to create your first tree diagram.

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Uninstallation

To uninstall TeeTree from the IDE:
  1. Go to Tools → Options
  2. Navigate to Language → Delphi → Library
  3. Remove TeeTree paths from Library path
  4. In Component → Install Packages
  5. Find TeeTree packages and click Remove
Uninstalling only removes design-time support. Your existing projects will continue to work as long as source files are accessible.

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