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 Tree With Dependent Check Boxes Sample for iGrid ActiveX
 
 Control Version: 5.0
 Environment: Visual Basic 6

 Copyright (c) 10Tec Company. All rights reserved.
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Description
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If a tree view has nodes with check boxes, they should be related to each other in the general case. For instance, the parent nodes should be grayed automatically if only some of the child nodes are checked. This example demonstrates how to do that in iGrid.

Short Code Explanation
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The code uses a routine that is called recursively to update the parent and grandparent nodes. Its UpdateParentRow. Only the related nodes of a given node are processed with each check box click  it doesnt waste time reevaluating unrelated nodes. The special sub called CheckChangeEvent is used to demonstrate that at debug time by producing the messages about the rows which check boxes have been touched.

