/// <summary> /// Takes the snapshot of the window owned by a process /// </summary> /// <param name="name">The process name</param> /// <returns>Bitmap object</returns> public static Bitmap ProcessSnapshot(string name) { IntPtr hwnd = IntPtr.Zero; foreach (System.Diagnostics.Process p in System.Diagnostics.Process.GetProcessesByName(name)) { if (p.MainWindowHandle != IntPtr.Zero) { hwnd = p.MainWindowHandle; break; } } if (hwnd == IntPtr.Zero) { return(null); } else { USER32.RECT rc; USER32.GetWindowRect(hwnd, out rc); Rectangle r = ApiConverter.ToRectangle(rc); Bitmap bitmap = new Bitmap(r.Width, r.Height, PixelFormat.Format24bppRgb); using (Graphics g = Graphics.FromImage(bitmap)) { IntPtr hdcBitmap = g.GetHdc(); USER32.PrintWindow(hwnd, hdcBitmap, 0); } return(bitmap); } }
internal static Rectangle GetWindowRectangle(IntPtr hWnd) { USER32.Rect rect = new USER32.Rect(); if (USER32.GetWindowRect(hWnd, ref rect)) { return(rect.ToRectangle()); } else { return(new Rectangle()); } }
/// <summary> /// Takes a snaphot of a window /// </summary> /// <param name="hwnd">Handle to the window</param> /// <returns>Bitmap object</returns> public static Bitmap WindowSnapshot(IntPtr hwnd) { if (hwnd == IntPtr.Zero) { return(null); } else { USER32.RECT rc; USER32.GetWindowRect(hwnd, out rc); Rectangle r = ApiConverter.ToRectangle(rc); Bitmap bitmap = new Bitmap(r.Width, r.Height, PixelFormat.Format24bppRgb); using (Graphics g = Graphics.FromImage(bitmap)) { IntPtr hdcBitmap = g.GetHdc(); USER32.PrintWindow(hwnd, hdcBitmap, 0); } return(bitmap); } }
public void WndActivate(object sender, CbtEventArgs e) { IntPtr hMsgBox = e.wParam; // try to find a howner for this message box if (hOwner == IntPtr.Zero) { hOwner = USER32.GetActiveWindow(); } // get the MessageBox window rect RECT rectDlg = new RECT(); USER32.GetWindowRect(hMsgBox, ref rectDlg); // get the owner window rect RECT rectForm = new RECT(); USER32.GetWindowRect(hOwner, ref rectForm); // get the biggest screen area Rectangle rectScreen = API.TrueScreenRect; // if no parent window, center on the primary screen if (rectForm.right == rectForm.left) { rectForm.right = rectForm.left = Screen.PrimaryScreen.WorkingArea.Width / 2; } if (rectForm.bottom == rectForm.top) { rectForm.bottom = rectForm.top = Screen.PrimaryScreen.WorkingArea.Height / 2; } // center on parent int dx = ((rectDlg.left + rectDlg.right) - (rectForm.left + rectForm.right)) / 2; int dy = ((rectDlg.top + rectDlg.bottom) - (rectForm.top + rectForm.bottom)) / 2; rect = new Rectangle( rectDlg.left - dx, rectDlg.top - dy, rectDlg.right - rectDlg.left, rectDlg.bottom - rectDlg.top); // place in the screen if (rect.Right > rectScreen.Right) { rect.Offset(rectScreen.Right - rect.Right, 0); } if (rect.Bottom > rectScreen.Bottom) { rect.Offset(0, rectScreen.Bottom - rect.Bottom); } if (rect.Left < rectScreen.Left) { rect.Offset(rectScreen.Left - rect.Left, 0); } if (rect.Top < rectScreen.Top) { rect.Offset(0, rectScreen.Top - rect.Top); } if (e.IsDialog) { // do the job when the WM_INITDIALOG message returns wndProcRetHook = new WndProcRetHook(hMsgBox); wndProcRetHook.WndProcRet += new WndProcRetHook.WndProcEventHandler(WndProcRet); wndProcRetHook.Install(); } else { USER32.MoveWindow(hMsgBox, rect.Left, rect.Top, rect.Width, rect.Height, 1); } // uninstall this hook WindowsHook wndHook = (WindowsHook)sender; Debug.Assert(cbtHook == wndHook); cbtHook.Uninstall(); cbtHook = null; }