public static void ItemClick(this IntPtr treeViewHwnd, IntPtr itemHwnd, Size offSet)
{
uint vProcessId;
User32Api.GetWindowThreadProcessId(treeViewHwnd, out vProcessId);
var vProcess = Kernel32Api.OpenProcess(
WindowsMessageApi.PROCESS_ALL_ACCESS,
false,
vProcessId
);
var remoteBuffer = Kernel32Api.VirtualAllocEx(vProcess,
IntPtr.Zero,
(uint)Marshal.SizeOf(typeof(User32Api.RectApi)),
WindowsMessageApi.MEM_COMMIT,
WindowsMessageApi.PAGE_EXECUTE_READWRITE);
try
{
var rc = new User32Api.RectApi {
left = itemHwnd.ToInt32()
};
var localBuffer = Marshal.AllocHGlobal(Marshal.SizeOf(rc));
Marshal.StructureToPtr(rc, localBuffer, false);
int vNumberOfBytes;
Kernel32Api.WriteProcessMemory(vProcess, remoteBuffer, localBuffer,
Marshal.SizeOf(typeof(User32Api.RectApi)), out vNumberOfBytes);
User32Api.SendMessage(treeViewHwnd, WindowsMessageApi.TVM_SELECTITEM, WindowsMessageApi.TVGN_CARET,
itemHwnd.ToInt32());
User32Api.SendMessage(treeViewHwnd, WindowsMessageApi.TVM_ENSUREVISIBLE, 0, itemHwnd.ToInt32());
User32Api.SendMessage(treeViewHwnd, WindowsMessageApi.TVM_GETITEMRECT, 1, remoteBuffer.ToInt32());
Kernel32Api.ReadProcessMemory(vProcess, remoteBuffer, localBuffer,
Marshal.SizeOf(typeof(User32Api.RectApi)), out vNumberOfBytes);
rc = (User32Api.RectApi)Marshal.PtrToStructure(localBuffer, typeof(User32Api.RectApi));
var pt = rc.ToRectangle().Center() + offSet;
User32Api.SendMessage(treeViewHwnd, WindowsMessageApi.WM_LBUTTONDBLCLK, 0, (int)MAKELPARAM((uint)pt.X, (uint)pt.Y));
}
finally
{
Kernel32Api.VirtualFreeEx(vProcess, remoteBuffer, (uint)Marshal.SizeOf(typeof(User32Api.RectApi)),
WindowsMessageApi.MEM_FREE);
Kernel32Api.CloseHandle(vProcess);
}
}
public static string GetItemText(this IntPtr treeViewHwnd, IntPtr itemHwnd)
{
var result = new StringBuilder(1024);
uint vProcessId;
User32Api.GetWindowThreadProcessId(treeViewHwnd, out vProcessId);
var vProcess = Kernel32Api.OpenProcess(
WindowsMessageApi.PROCESS_VM_OPERATION |
WindowsMessageApi.PROCESS_VM_READ |
WindowsMessageApi.PROCESS_VM_WRITE,
false,
vProcessId
);
var pStrBufferMemory = Kernel32Api.VirtualAllocEx(vProcess,
IntPtr.Zero,
1024,
WindowsMessageApi.MEM_COMMIT,
WindowsMessageApi.PAGE_READWRITE);
var remoteBuffer = Kernel32Api.VirtualAllocEx(vProcess,
IntPtr.Zero,
(uint)Marshal.SizeOf(typeof(User32Api.TVITEM)),
WindowsMessageApi.MEM_COMMIT,
WindowsMessageApi.PAGE_EXECUTE_READWRITE);
try
{
var tvItem = new User32Api.TVITEM
{
mask = WindowsMessageApi.TVIF_TEXT,
hItem = itemHwnd,
pszText = pStrBufferMemory,
cchTextMax = 1024
};
var localBuffer = Marshal.AllocHGlobal(Marshal.SizeOf(tvItem));
Marshal.StructureToPtr(tvItem, localBuffer, false);
int vNumberOfBytesWrite;
Kernel32Api.WriteProcessMemory(
vProcess,
remoteBuffer,
localBuffer,
Marshal.SizeOf(typeof(User32Api.TVITEM)),
out vNumberOfBytesWrite);
User32Api.SendMessage(treeViewHwnd, WindowsMessageApi.TVM_GETITEM, 0, remoteBuffer.ToInt32());
int vNumberOfBytesRead;
Kernel32Api.ReadProcessMemory(
vProcess,
pStrBufferMemory,
result,
1024,
out vNumberOfBytesRead
);
}
finally
{
Kernel32Api.VirtualFreeEx(vProcess, pStrBufferMemory, 0, WindowsMessageApi.MEM_RELEASE);
Kernel32Api.VirtualFreeEx(vProcess, remoteBuffer, 0, WindowsMessageApi.MEM_RELEASE);
Kernel32Api.CloseHandle(vProcess);
}
return(result.ToString());
}
