public static Rectangle GetWindowRect(this IntPtr hWnd)
{
var rect = new User32Api.RectApi();
User32Api.GetWindowRect(hWnd, ref rect);
return(rect.ToRectangle());
}
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 Bitmap Capture(this IntPtr hWnd)
{
var hscrdc = User32Api.GetWindowDC(hWnd);
var windowRect = new User32Api.RectApi();
User32Api.GetWindowRect(hWnd, ref windowRect);
var width = windowRect.right - windowRect.left;
var height = windowRect.bottom - windowRect.top;
var hbitmap = Gdi32Api.CreateCompatibleBitmap(hscrdc, width, height);
var hmemdc = Gdi32Api.CreateCompatibleDC(hscrdc);
Gdi32Api.SelectObject(hmemdc, hbitmap);
User32Api.PrintWindow(hWnd, hmemdc, 0);
var bmp = Image.FromHbitmap(hbitmap);
Gdi32Api.DeleteDC(hscrdc); //删除用过的对象
Gdi32Api.DeleteDC(hmemdc); //删除用过的对象
GC.Collect();
return(bmp);
}
public static Rectangle ToRectangle(this User32Api.RectApi rect)
{
return(new Rectangle(rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top));
}