This example shows how to show checkboxes within nodes displayed at a specified tree level and hide/disable checkboxes for other nodes. The CustomDrawNodeCheckBox event is handled to hide checkboxes ...
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 ...