Board index » cppbuilder » Moving nodes

2007-11-18 06:06:12 AM
cppbuilder66
How come when I select more than one node, and I drop the
nodes somewhere else, only one of the selected nodes get moved?
TTreeNode *SourceNode = TreeView1->Selected;
TTreeNode *TargetNode = TreeView1->DropTarget;
if((TargetNode) && (SourceNode != TargetNode))
{
for(int x = 0; x < TreeView1->SelectionCount; ++x)
{
SourceNode = TreeView1->Selections[x];
SourceNode->MoveTo(TargetNode, naAddChild);
}
}
 

Hi CJ
CJ says:
Have You checked the value of TreeView1->SelectionCount
for each loop ?
are You sorounding Your code by
TreeView1->BeginUpdate();
and
TreeView1->EndUpdate();
Just what I would try to begin with.
Kind regards
Asger
 

"CJ" < XXXX@XXXXX.COM >wrote in message
the TreeView's selection status. After you move the first node, the
SelectionCount may be decremented, causing your loop to exit prematurely.
To do what you are attempting, you should store the desired nodes into a
separate list first, and then loop through that list separately. For
example:
TTreeNode *SourceNode = TreeView1->Selected;
TTreeNode *TargetNode = TreeView1->DropTarget;
if( (TargetNode) && (SourceNode != TargetNode) )
{
TList *TmpList = new TList;
try
{
for(int x = 0; x < TreeView1->SelectionCount; ++x)
TmpList->Add(TreeView1->Selections[x]);
for(int x = 0; x < TmpList->Count; ++x)
{
SourceNode = (TTreeNode*) TmpList->Items[x];
SourceNode->MoveTo(TargetNode, naAddChild);
}
}
__finally
{
delete TmpList;
}
}
Gambit
 

{smallsort}

was confusing me.
Thanks again