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| − | =tree_proc to-do=
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| − | tree_proc(id_tree, id_action, id_item=0, index=0, text="", image_index=-1)
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| − | Controls treeview-control.
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| − | * Param id_tree is int handle of treeview.
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| − | * Param id_item is int handle of treeview item. Can be 0 for invisible root-item, e.g. you can remove all using root-item, enumerate root level using root-item.
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| − | Possible values of id_action:
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| − | * TREE_ITEM_ENUM: Gets list of subitems of item, or None. Param id_item. Gets list of 2-tuples: (int_handle, str_caption).
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| − | * TREE_ITEM_ADD: Adds subitem as item's child. Param id_item. Param index: at which subitem index to insert (0-based), or -1 to append. Param text: caption of item. Param image_index: index in tree's icon list or -1 to not show icon. Gets int handle of subitem.
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| − | * TREE_ITEM_DELETE: Deletes item (with all subitems). Param id_item.
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| − | * TREE_ITEM_SET_TEXT: Sets item's text. Params: id_item, text.
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| − | * TREE_ITEM_SET_ICON: Sets item's icon. Params: id_item, image_index.
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| − | * TREE_ICON_ADD: Adds icon to icon list. Param text: path to 16x16 bmp file. Gets icon index or -1 if cannot add.
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| − | * TREE_ICON_DELETE: Deletes icon from icon list (note: icons after this index will shift, will have less index). Param image_index. Gets bool: index existed before.
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