/// <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;
}
