StringPointer Problem with TVM_GETITEM! [modified]

[suguimoto]

Hello! [modified] Thanx to OrlandoCurioso! I have tried to use a SendMessage with TVM_GETITEM with a TVITEM struct... but I got no result at all =/ Here is the code(piece): [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)] public struct TVITEM { public int mask; public IntPtr hItem; public int state; public int stateMask; [MarshalAs(UnmanagedType.LPStr)] public string pszText; // string pointer public int cchTextMax; public int iImage; public int iSelectedImage; public int cChildren; public IntPtr lParam; } StringBuilder sb = new StringBuilder(256); TVITEM tvItem = new TVITEM(); tvItem.hItem = (IntPtr)Int32.Parse(textBox1.Text); tvItem.cchTextMax = 256; tvItem.pszText = sb.ToString(); tvItem.mask = TVIF_TEXT; // TVIF_TEXT = 0x0001; IntPtr j = SendMessage(TreeHandle, (int)TV_Messages.TVM_GETITEM, (int)0, ref tvItem); MessageBox.Show(j.ToString()); I´m still having some troubles... I think my only problem now is with the the String Pointer... If I can make it work... I can Retrive my item´s name from the TreeView... and it´s done! Thanks! -- modified at 9:27 Friday 9th June, 2006

[OrlandoCurioso]

You use the TV_INSERTSTRUCT declare. This is correct: [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)] public struct TVITEM { public int mask; public IntPtr hItem; public int state; public int stateMask; public IntPtr pszText; public int cchTextMax; public int iImage; public int iSelectedImage; public int cChildren; public IntPtr lParam; }

[suguimoto]

Thanky you very much!!!! NExt step: set correctly the values.. send set it to fire! Best Regards