public static extern UInt16 RegisterClassEx2([In] ref WNDCLASSEX lpwcx);
// please refer the following code to
// http://www.pinvoke.net/default.aspx/user32/CreateWindowEx.html
// and check on this for the marshal
// http://www.pinvoke.net/default.aspx/Structures.WNDCLASS
public void CreateMessagePump(IntPtr hInstance, IntPtr hPrevInstance, string lpszCmdLine, int nCmdShow)
{
//MSG msg;
bool bRet;
WNDCLASS wc;
lpszCmdLine = null;
hInstance = System.Diagnostics.Process.GetCurrentProcess().Handle;
//WNDCLASS wndClass;
//WNDCLASS wndClass = new WNDCLASS();
WNDCLASSEX wndClass = new WNDCLASSEX();
//wndClass.cbSize = sizeof(WNDCLASSEX); // you cannot use the sizeof operator, instead use the Marshal.Sizeof ()
wndClass.cbSize = Marshal.SizeOf(typeof(WNDCLASSEX));
string szName = "HelloWin";
//wndClass.style = (uint) (ClassStyles.HorizontalRedraw | ClassStyles.VerticalRedraw);
//wndClass.style = ClassStyles.HorizontalRedraw | ClassStyles.VerticalRedraw;
wndClass.style = (int)(ClassStyles.HorizontalRedraw | ClassStyles.VerticalRedraw);
// all those Method.MethodHandle.GetFunctionPointer() call is so STUPID
//wndClass.lpfnWndProc = ((WndProc)((hWnd, message, wParam, lParam) =>
//{
// IntPtr hdc;
// PAINTSTRUCT ps;
// RECT rect;
// //switch ((WM) message)
// //{
// // WinAPI.BeginPaint(hWnd, out ps);
// // break;
// //}
// switch ((WM)message)
// {
// case WM.PAINT:
// hdc = WinAPI.BeginPaint(hWnd, out ps);
// WinAPI.GetClientRect(hWnd, out rect);
// WinAPI.DrawText(hdc, "Hello, Windows 98!", -1, ref rect, Win32_DT_Constant.DT_SINGLELINE | Win32_DT_Constant.DT_CENTER | Win32_DT_Constant.DT_VCENTER);
// WinAPI.EndPaint(hWnd, ref ps);
// return IntPtr.Zero;
// break;
// case WM.DESTROY:
// WinAPI.PostQuitMessage(0);
// return IntPtr.Zero;
// break;
// }
// return WinAPI.DefWindowProc(hWnd, (WM)message, wParam, lParam);
//}
//)).Method.MethodHandle.GetFunctionPointer();
wndClass.lpfnWndProc = Marshal.GetFunctionPointerForDelegate((WndProc)((hWnd, message, wParam, lParam) =>
{
IntPtr hdc;
PAINTSTRUCT ps;
RECT rect;
//switch ((WM) message)
//{
// WinAPI.BeginPaint(hWnd, out ps);
// break;
//}
switch ((WM)message)
{
case WM.PAINT:
hdc = WinAPI.BeginPaint(hWnd, out ps);
WinAPI.GetClientRect(hWnd, out rect);
WinAPI.DrawText(hdc, "Hello, Windows 98!", -1, ref rect, Win32_DT_Constant.DT_SINGLELINE | Win32_DT_Constant.DT_CENTER | Win32_DT_Constant.DT_VCENTER);
WinAPI.EndPaint(hWnd, ref ps);
return(IntPtr.Zero);
break;
case WM.DESTROY:
WinAPI.PostQuitMessage(0);
return(IntPtr.Zero);
break;
}
return(WinAPI.DefWindowProc(hWnd, (WM)message, wParam, lParam));
}
));
//wndClass.lpfnWndProc = (WndProc) ((hWnd, message, wParam, lParam) => {
// IntPtr hdc;
// PAINTSTRUCT ps;
// RECT rect;
// //switch ((WM) message)
// //{
// // WinAPI.BeginPaint(hWnd, out ps);
// // break;
// //}
// switch ((WM)message)
// {
// case WM.PAINT:
// hdc = WinAPI.BeginPaint(hWnd, out ps);
// WinAPI.GetClientRect(hWnd, out rect);
// WinAPI.DrawText(hdc, "Hello, Windows 98!", -1, ref rect, Win32_DT_Constant.DT_SINGLELINE | Win32_DT_Constant.DT_CENTER | Win32_DT_Constant.DT_VCENTER);
// WinAPI.EndPaint(hWnd, ref ps);
// return IntPtr.Zero;
// break;
// case WM.DESTROY:
// WinAPI.PostQuitMessage(0);
// return IntPtr.Zero;
// break;
// }
// return WinAPI.DefWindowProc(hWnd, (WM)message, wParam, lParam);
//}
//);
wndClass.cbClsExtra = 0;
wndClass.cbWndExtra = 0;
wndClass.hInstance = hInstance;
wndClass.hIcon = WinAPI.LoadIcon(
IntPtr.Zero, new IntPtr(0));
//wndClass.hCursor = WinAPI.LoadCursor(IntPtr.Zero, (int)IdcStandardCursor.IDC_ARROW);
wndClass.hCursor = WinAPI.LoadCursor(IntPtr.Zero, (int)Win32_IDC_Constants.IDC_ARROW);
wndClass.hbrBackground = WinAPI.GetStockObject(StockObjects.WHITE_BRUSH);
wndClass.lpszMenuName = null;
wndClass.lpszClassName = szName;
//WindowStyleEx.WS_EX_OVERLAPPEDWINDOW
//ushort regResult = WinAPI.RegisterClass(ref wndClass); // change to RegisterClassEx
//ushort regResult = (ushort)WinAPI.RegisterClassEx(ref wndClass); // change the varie RegisterClassEx2
UInt16 regRest = WinAPI.RegisterClassEx2(ref wndClass);
//if (regResult == 0)
//{
// int lastError = Marshal.GetLastWin32Error();
// string errorMessage = new Win32Exception(lastError).Message;
// WinAPI.MessageBox(IntPtr.Zero, "This program requires windows NT!",
// szName, (int) MessageBoxOptions.IconError);
//}
// this varie of CreateWindowEx do no work
//IntPtr hwnd = WinAPI.CreateWindowEx(
// 0,
// szName,
// "The Hello Program",
// WindowStyles.WS_OVERLAPPEDWINDOW,
// Win32_CW_Constant.CW_USEDEFAULT,
// Win32_CW_Constant.CW_USEDEFAULT,
// Win32_CW_Constant.CW_USEDEFAULT,
// Win32_CW_Constant.CW_USEDEFAULT,
// IntPtr.Zero,
// IntPtr.Zero,
// hInstance,
// IntPtr.Zero);
IntPtr hwnd = WinAPI.CreateWindowEx2(
0,
regRest,
"The hello proram",
WindowStyles.WS_OVERLAPPEDWINDOW,
Win32_CW_Constant.CW_USEDEFAULT,
Win32_CW_Constant.CW_USEDEFAULT,
Win32_CW_Constant.CW_USEDEFAULT,
Win32_CW_Constant.CW_USEDEFAULT,
IntPtr.Zero,
IntPtr.Zero,
hInstance,
IntPtr.Zero);
//IntPtr hwnd = WinAPI.CreateWindowEx(
// WindowStylesEx.WS_EX_OVERLAPPEDWINDOW,
// //new IntPtr((int)(uint)regResult),
// //Marshal.PtrToStringAnsi(new IntPtr((int) (uint) regResult)),
// szName,
// //szName, //Window Class name
// "The Hello Program", // window caption
// WindowStyles.WS_OVERLAPPEDWINDOW, // Window style
// Win32_CW_Constant.CW_USEDEFAULT, // initial x position
// Win32_CW_Constant.CW_USEDEFAULT, // initial y position
// Win32_CW_Constant.CW_USEDEFAULT, // initial x size
// Win32_CW_Constant.CW_USEDEFAULT, // initial y size
// IntPtr.Zero, // parent window handle
// IntPtr.Zero, // program menu handle
// hInstance, // program instance handle
// IntPtr.Zero); // Creation Parameter
if (hwnd == IntPtr.Zero)
{
int lastError = Marshal.GetLastWin32Error();
string errorMessage = new Win32Exception(lastError).Message;
}
WinAPI.ShowWindow(hwnd, ShowWindowCommands.Normal);
WinAPI.UpdateWindow(hwnd);
WinAPI.UpdateWindow(hwnd);
MSG msg;
while (WinAPI.GetMessage(out msg, IntPtr.Zero, 0, 0) != 0)
{
WinAPI.TranslateMessage(ref msg);
WinAPI.DispatchMessage(ref msg);
}
return;
}
//public static extern short RegisterClassEx([In] ref WNDCLASS lpwcx); public static extern short RegisterClassEx([In] ref WNDCLASSEX lpwcx);