@msdn=http://msdn.microsoft.com/en-us/library/bb760554(v=vs.85).aspx @pinvoke=http://pinvoke.net/$$$.htm Summary: Specifies or receives the attributes of a tab item. !!!!C# Signature: [StructLayout(LayoutKind.Sequential)] struct TCITEM { public uint mask; public int state; public int statemask; public IntPtr text; public int size; public int image; public int param; } !!!!VB Signature: Declare Function TCITEM Lib "user32.dll" (TODO) As TODO !!!!User-Defined Types: None. !!!!Alternative Managed API: Do you know one? Please contribute it! !!!!Notes: None. !!!!Tips & Tricks: Please add some! !!!!Sample Code: I slightly edited some things, so maybe it doesn't work out of the box, should be 99% fine though. { #region code TCITEM tcitem = new TCITEM(); tcitem.size = 200; uint ProcessID; GetWindowThreadProcessId((IntPtr)handle, out ProcessID); IntPtr process = OpenProcess(ProcessAccessFlags.VMOperation | ProcessAccessFlags.VMRead | ProcessAccessFlags.VMWrite | ProcessAccessFlags.QueryInformation, false, ProcessID); IntPtr pszTextPtr = VirtualAllocEx(process, IntPtr.Zero, 512, AllocationType.Commit, MemoryProtection.ReadWrite); IntPtr tcitemPtr = VirtualAllocEx(process, IntPtr.Zero, (uint)Marshal.SizeOf(typeof(TCITEM)), AllocationType.Commit, MemoryProtection.ReadWrite); const int TCIF_STATE = 0x10; const int TCIF_TEXT = 0x1; tcitem.mask = TCIF_STATE | TCIF_TEXT; tcitem.text = pszTextPtr; string L_buf = "nasenmann "; IntPtr TextPtr = Marshal.StringToHGlobalAnsi(L_buf); L_buf = "überschrieben"; int bytesReaded; WriteProcessMemory(process, pszTextPtr, TextPtr, 512, IntPtr.Zero); Marshal.FreeHGlobal(TextPtr); IntPtr ptr = Marshal.AllocHGlobal(Marshal.SizeOf(tcitem)); Marshal.StructureToPtr(tcitem, ptr, true); tcitem.size = 1; // überschrieben WriteProcessMemory(process, tcitemPtr, ptr, Marshal.SizeOf(tcitem), IntPtr.Zero); Marshal.FreeHGlobal(ptr); int res = SendMessage(handle, TCM_GETITEMA, index, tcitemPtr); ptr = Marshal.AllocHGlobal(512); ReadProcessMemory(process, pszTextPtr, ptr, 512, out bytesReaded); L_buf = Marshal.PtrToStringAnsi(ptr); Marshal.FreeHGlobal(ptr); ptr = Marshal.AllocHGlobal(Marshal.SizeOf(tcitem)); ReadProcessMemory(process, tcitemPtr, ptr, (int)Marshal.SizeOf(tcitem), out bytesReaded); tcitem = (TCITEM)Marshal.PtrToStructure(ptr, tcitem.GetType()); Marshal.FreeHGlobal(ptr); VirtualFreeEx(process, tcitemPtr, 0, FreeType.Release); VirtualFreeEx(process, pszTextPtr, 0, FreeType.Release); #endregion #region defines [Flags] public enum FreeType { Decommit = 0x4000, Release = 0x8000, } [Flags] enum ProcessAccessFlags : uint { All = 0x001F0FFF, Terminate = 0x00000001, CreateThread = 0x00000002, VMOperation = 0x00000008, VMRead = 0x00000010, VMWrite = 0x00000020, DupHandle = 0x00000040, SetInformation = 0x00000200, QueryInformation = 0x00000400, Synchronize = 0x00100000 } [Flags] public enum AllocationType { Commit = 0x1000, Reserve = 0x2000, Decommit = 0x4000, Release = 0x8000, Reset = 0x80000, Physical = 0x400000, TopDown = 0x100000, WriteWatch = 0x200000, LargePages = 0x20000000 } [Flags] public enum MemoryProtection { Execute = 0x10, ExecuteRead = 0x20, ExecuteReadWrite = 0x40, ExecuteWriteCopy = 0x80, NoAccess = 0x01, ReadOnly = 0x02, ReadWrite = 0x04, WriteCopy = 0x08, GuardModifierflag = 0x100, NoCacheModifierflag = 0x200, WriteCombineModifierflag = 0x400 } [DllImport("user32.dll", SetLastError = true)] static extern uint GetWindowThreadProcessId(IntPtr hWnd, out uint lpdwProcessId); [DllImport("kernel32.dll", SetLastError = true, ExactSpelling = true)] static extern IntPtr VirtualAllocEx(IntPtr hProcess, IntPtr lpAddress, uint dwSize, AllocationType flAllocationType, MemoryProtection flProtect); [DllImport("kernel32.dll")] static extern IntPtr OpenProcess(ProcessAccessFlags dwDesiredAccess, [MarshalAs(UnmanagedType.Bool)] bool bInheritHandle, uint dwProcessId); [DllImport("kernel32.dll", SetLastError = true, ExactSpelling = true)] static extern bool VirtualFreeEx(IntPtr hProcess, IntPtr lpAddress, int dwSize, FreeType dwFreeType); [DllImport("kernel32.dll", SetLastError = true)] static extern bool ReadProcessMemory( IntPtr hProcess, IntPtr lpBaseAddress, IntPtr lpBuffer, int dwSize, out int lpNumberOfBytesRead ); [DllImport("kernel32.dll", SetLastError = true)] static extern bool WriteProcessMemory(IntPtr hProcess, IntPtr lpBaseAddress, IntPtr lpBuffer, int nSize, IntPtr lpNumberOfBytesWritten); #endregion } You can find some more ideas here: http://www.andreas-reiff.de/2011/06/c-speicher-anderen-prozess-befullen-lassen-checken-ob-ein-button-gedruckt/ (though it is in German) I am also working on a generic method to pass structs. It is working for an arbitrary number of strings contained in the struct and is very user friendly. :) Once it is finished I will post it somewhere on the net as well. Also, you can use the code here for any situation where you have a struct that contains a pointer to some other structure that you then again need to fill (and read). Documentation: TCITEM@msdn on MSDN
Edit user32.TCITEM
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