The TVM_GETIMAGELIST message retrieves the handle to the normal or state image list associated with a tree-view control. You can send this message explicitly or by using the TreeView_GetImageList macro.
TVM_GETIMAGELIST wParam = (WPARAM) iImage; lParam = 0;
| Value | Meaning | 
| TVSIL_NORMAL | Indicates the normal image list, which contains selected, nonselected, and overlay images for the items of a tree-view control. | 
| TVSIL_STATE | Indicates the state image list. You can use state images to indicate application-defined item states. A state image is displayed to the left of an item’s selected or nonselected image. | 
Returns an HIMAGELIST handle to the specified image list.