Difference between revisions of "VirtualTreeview"

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=== About ===
 
=== About ===
VirtualTreeview is a treeview control built from ground up.
+
VirtualTreeview is a [[TTreeView]] control built from ground up.
  
 
Its main characteristics are :
 
Its main characteristics are :
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=== Download ===
 
=== Download ===
 +
See the project [https://github.com/blikblum/VirtualTreeView-Lazarus/releases releases page]
  
See the project [https://github.com/blikblum/VirtualTreeView-Lazarus/releases releases page]
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Note that v5.5.3.1 is included in Lazarus v2.0+, there is not need for a separate download.
  
 
=== Repository ===
 
=== Repository ===
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Subversion:
 
Subversion:
  svn co https://github.com/blikblum/VirtualTreeView-Lazarus/branches/lazarus_v5
+
  svn co https://github.com/blikblum/VirtualTreeView-Lazarus/branches/lazarus-v5
  
 
Replace lazarus_v5 by lazarus_v4 or lazarus_master to get a different version. For more info how to use Subversion, see [https://help.github.com/articles/support-for-subversion-clients/ GitHub help]
 
Replace lazarus_v5 by lazarus_v4 or lazarus_master to get a different version. For more info how to use Subversion, see [https://help.github.com/articles/support-for-subversion-clients/ GitHub help]
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=== Bug report / Feature request ===
 
=== Bug report / Feature request ===
  
[http://bugs.freepascal.org Bug Tracker] project Lazarus-CCR, category Virtual Treeview
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[https://github.com/blikblum/VirtualTreeView-Lazarus/issues Here]
 +
 
 +
For patches / pull requests, [https://github.com/blikblum/VirtualTreeView-Lazarus/pulls here]. Newcomers to GitHub may want to read the [https://help.github.com/articles/using-pull-requests/ help]
  
 
=== Change Log ===
 
=== Change Log ===
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=== Installation ===
 
=== Installation ===
 
* If new to Lazarus, read [[Install Packages]]
 
* If new to Lazarus, read [[Install Packages]]
* Extract the LCL Extensions package to a directory (lazarus\components\lclextensions or other of your preference)
+
* Lazarus v2.0: The lclextensions and virtualtreeview packages are contained in the standard distribution of Lazarus because they are needed by the OnlinePackageManager. Go to "Package" > "Install/uninstall packages", select "virtualtreeview_package 5.5.3.1" in the right list, click "Install selection", then "Save and rebuild IDE".
* Extract the Virtual Treeview package to a directory (lazarus\components\virtualtreeview or other of your preference)
+
* Lazarus v2.2+ (or trunk): Like above, but the package and all units have been renamed to have a "laz." prefix, e.g. "laz.virtualtreeview_package" instead of "virtualtreeview_package" and "laz.virtualtrees" instead of "virtualtrees". The names of the registered components also begin with "Laz", e.g. "TLazVirtualStringTree" instead of "TVirtualStringTree". This was made to avoid a naming conflict when the user wants to install another version of VTV in addition to the built-in one.
* Open lclextensions_package.lpk in LCL Extensions directory and click "Use / Add to project"
+
* Lazarus before v2.0, or VTV version other than v5.5.3.1 (in Laz v2.0 you will have to uninstall the built-in version first):
* Open virtualtreeview_package.lpk in Virtual Treeview and click "Use / Install". Rebuild the IDE
+
** Download the LCL Extensions package and extract it to a directory (lazarus\components\lclextensions or other of your preference).
 +
** Download the Virtual Treeview package and extract it to a directory (lazarus\components\virtualtreeview or other of your preference).
 +
** Open lclextensions_package.lpk in LCL Extensions directory and click "Use / Add to project"
 +
** Open virtualtreeview_package.lpk in Virtual Treeview and click "Use / Install". Rebuild the IDE.
  
 
=== Help ===
 
=== Help ===
 
 
Can be found at [http://www.soft-gems.net/index.php/controls/virtual-treeview VirtualTreeview Main Page] (search for ''help in chm format'').
 
Can be found at [http://www.soft-gems.net/index.php/controls/virtual-treeview VirtualTreeview Main Page] (search for ''help in chm format'').
  
 
Example code can be found here: [[VirtualTreeview Example for Lazarus]]
 
Example code can be found here: [[VirtualTreeview Example for Lazarus]]
 +
 +
== See also ==
 +
* [[TTreeView]]
  
 
[[Category:Components]]
 
[[Category:Components]]
 
[[Category:Lazarus]]
 
[[Category:Lazarus]]
 
[[Category:Lazarus-CCR]]
 
[[Category:Lazarus-CCR]]

Revision as of 02:40, 17 November 2020

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About

VirtualTreeview is a TTreeView control built from ground up.

Its main characteristics are :

  • it is extremely fast. Adding one million nodes takes only ~700 milliseconds
  • very small memory foot print. by only allocating about 60 bytes per node
  • optimized for high speed access. It takes as few as 0.5 seconds to traverse one million nodes
  • Multiselection is supported
  • Drawing the entire tree to a bitmap or the printer is supported
  • fixed background image can be used
  • Hot style for nodes is supported
  • Nodes can have individual heights
  • Sorting via compare callback
  • Support for unicode
  • Multiple columns are supported
  • ... and many more

This component was designed for cross-platform applications.

Anivt.gif

Author

Author: Mike Lischke
Old LCL Port: Joerg Thaler,Christian Ulrich
New LCL Port: Luiz Américo

License

LGPL or Mozilla Public Licence 1.1

Download

See the project releases page

Note that v5.5.3.1 is included in Lazarus v2.0+, there is not need for a separate download.

Repository

You can checkout the source code from GitHub

It's possible to use both Subversion and Git clients

Subversion:

svn co https://github.com/blikblum/VirtualTreeView-Lazarus/branches/lazarus-v5

Replace lazarus_v5 by lazarus_v4 or lazarus_master to get a different version. For more info how to use Subversion, see GitHub help

Git:

git clone https://github.com/blikblum/VirtualTreeView-Lazarus.git

Bug report / Feature request

Here

For patches / pull requests, here. Newcomers to GitHub may want to read the help

Change Log

  • 02/06/2016 - 4.8.7 R4 and 5.5.3 R1 - First release of 5x branch + moved to GitHub
  • 20/10/2012 - 4.8.7 LCL R2 - Compatibility with Lazarus 1.0 + 64 bit support
  • 18/02/2011 - 4.8.7 LCL R1 - Sync with 4.8 branch + misc fixes
  • 11/02/2010 - 4.8.6 - First stable release of the new port

Dependencies / System Requirements

Versions 4.x or 5.x

  • Lazarus 1.6 or newer
  • fpc 2.6.4 or newer
  • LCL Extensions 0.6 or newer

Version 6.x (lazarus_master branch)

  • Lazarus 1.6 or newer
  • fpc 3.1 (trunk) or newer
  • LCL Extensions 0.6 or newer

Installation

  • If new to Lazarus, read Install Packages
  • Lazarus v2.0: The lclextensions and virtualtreeview packages are contained in the standard distribution of Lazarus because they are needed by the OnlinePackageManager. Go to "Package" > "Install/uninstall packages", select "virtualtreeview_package 5.5.3.1" in the right list, click "Install selection", then "Save and rebuild IDE".
  • Lazarus v2.2+ (or trunk): Like above, but the package and all units have been renamed to have a "laz." prefix, e.g. "laz.virtualtreeview_package" instead of "virtualtreeview_package" and "laz.virtualtrees" instead of "virtualtrees". The names of the registered components also begin with "Laz", e.g. "TLazVirtualStringTree" instead of "TVirtualStringTree". This was made to avoid a naming conflict when the user wants to install another version of VTV in addition to the built-in one.
  • Lazarus before v2.0, or VTV version other than v5.5.3.1 (in Laz v2.0 you will have to uninstall the built-in version first):
    • Download the LCL Extensions package and extract it to a directory (lazarus\components\lclextensions or other of your preference).
    • Download the Virtual Treeview package and extract it to a directory (lazarus\components\virtualtreeview or other of your preference).
    • Open lclextensions_package.lpk in LCL Extensions directory and click "Use / Add to project"
    • Open virtualtreeview_package.lpk in Virtual Treeview and click "Use / Install". Rebuild the IDE.

Help

Can be found at VirtualTreeview Main Page (search for help in chm format).

Example code can be found here: VirtualTreeview Example for Lazarus

See also