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fixing adding item into treeview if item not have parent item #771

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fixing adding item into treeview if item not have parent item #771

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16 changes: 10 additions & 6 deletions treeview.go
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Original file line number Diff line number Diff line change
Expand Up @@ -175,12 +175,16 @@ func (tv *TreeView) SetModel(model TreeModel) error {

var hInsertAfter win.HTREEITEM
parent := item.Parent()
for i := parent.ChildCount() - 1; i >= 0; i-- {
if parent.ChildAt(i) == item {
if i > 0 {
hInsertAfter = tv.item2Info[parent.ChildAt(i-1)].handle
} else {
hInsertAfter = win.TVI_FIRST
if parent == nil {
hInsertAfter = win.TVI_LAST
} else {
for i := parent.ChildCount() - 1; i >= 0; i-- {
if parent.ChildAt(i) == item {
if i > 0 {
hInsertAfter = tv.item2Info[parent.ChildAt(i-1)].handle
} else {
hInsertAfter = win.TVI_FIRST
}
}
}
}
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