// generic method to retrieve info about tree view item
// NOTE: this method should not be used to retrieve a text
// instead use GetItemText
private static bool GetItem (IntPtr hwnd, IntPtr item, int mask, out NativeMethods.TVITEM treeItem)
{
treeItem = new NativeMethods.TVITEM ();
treeItem.Init (item);
treeItem.mask = (uint) mask;
return XSendMessage.GetItem(hwnd, ref treeItem);
}
private static string GetItemText(IntPtr hwnd, IntPtr item)
{
NativeMethods.TVITEM treeItem = new NativeMethods.TVITEM();
treeItem.Init(item);
treeItem.mask = NativeMethods.TVIF_TEXT;
treeItem.cchTextMax = Misc.MaxLengthNameProperty;
return XSendMessage.GetItemText(hwnd, treeItem);
}
// set the check state for the specified item
private unsafe static bool SetCheckState (IntPtr hwnd, IntPtr item, bool check)
{
uint val = (check) ? 2U : 1U;
val <<= 12;
NativeMethods.TVITEM treeItem = new NativeMethods.TVITEM ();
treeItem.Init (item);
treeItem.mask = NativeMethods.TVIF_STATE;
treeItem.state = val;
treeItem.stateMask = NativeMethods.TVIS_STATEIMAGEMASK;
return XSendMessage.SetItem(hwnd, treeItem);
}