private void RegisterClass()
{
string className;
System.Windows.Forms.NativeMethods.WNDCLASS_D wc = new System.Windows.Forms.NativeMethods.WNDCLASS_D();
if (NativeWindow.userDefWindowProc == IntPtr.Zero)
{
string lpProcName = (Marshal.SystemDefaultCharSize == 1) ? "DefWindowProcA" : "DefWindowProcW";
NativeWindow.userDefWindowProc = System.Windows.Forms.UnsafeNativeMethods.GetProcAddress(new HandleRef(null, System.Windows.Forms.UnsafeNativeMethods.GetModuleHandle("user32.dll")), lpProcName);
if (NativeWindow.userDefWindowProc == IntPtr.Zero)
{
throw new Win32Exception();
}
}
if (this.className == null)
{
wc.hbrBackground = System.Windows.Forms.UnsafeNativeMethods.GetStockObject(5);
wc.style = this.classStyle;
this.defWindowProc = NativeWindow.userDefWindowProc;
className = "Window." + Convert.ToString(this.classStyle, 0x10);
this.hashCode = 0;
}
else
{
System.Windows.Forms.NativeMethods.WNDCLASS_I wndclass_i = new System.Windows.Forms.NativeMethods.WNDCLASS_I();
bool flag = System.Windows.Forms.UnsafeNativeMethods.GetClassInfo(System.Windows.Forms.NativeMethods.NullHandleRef, this.className, wndclass_i);
int error = Marshal.GetLastWin32Error();
if (!flag)
{
throw new Win32Exception(error, System.Windows.Forms.SR.GetString("InvalidWndClsName"));
}
wc.style = wndclass_i.style;
wc.cbClsExtra = wndclass_i.cbClsExtra;
wc.cbWndExtra = wndclass_i.cbWndExtra;
wc.hIcon = wndclass_i.hIcon;
wc.hCursor = wndclass_i.hCursor;
wc.hbrBackground = wndclass_i.hbrBackground;
wc.lpszMenuName = Marshal.PtrToStringAuto(wndclass_i.lpszMenuName);
className = this.className;
this.defWindowProc = wndclass_i.lpfnWndProc;
this.hashCode = this.className.GetHashCode();
}
this.windowClassName = this.GetFullClassName(className);
this.windowProc = new System.Windows.Forms.NativeMethods.WndProc(this.Callback);
wc.lpfnWndProc = this.windowProc;
wc.hInstance = System.Windows.Forms.UnsafeNativeMethods.GetModuleHandle(null);
wc.lpszClassName = this.windowClassName;
short num2 = System.Windows.Forms.UnsafeNativeMethods.RegisterClass(wc);
if (num2 == 0)
{
int num3 = Marshal.GetLastWin32Error();
if (num3 == 0x582)
{
System.Windows.Forms.NativeMethods.WNDCLASS_I wndclass_i2 = new System.Windows.Forms.NativeMethods.WNDCLASS_I();
if (System.Windows.Forms.UnsafeNativeMethods.GetClassInfo(new HandleRef(null, System.Windows.Forms.UnsafeNativeMethods.GetModuleHandle(null)), this.windowClassName, wndclass_i2) && (wndclass_i2.lpfnWndProc == NativeWindow.UserDefindowProc))
{
if (System.Windows.Forms.UnsafeNativeMethods.UnregisterClass(this.windowClassName, new HandleRef(null, System.Windows.Forms.UnsafeNativeMethods.GetModuleHandle(null))))
{
num2 = System.Windows.Forms.UnsafeNativeMethods.RegisterClass(wc);
}
else
{
do
{
domainQualifier++;
this.windowClassName = this.GetFullClassName(className);
wc.lpszClassName = this.windowClassName;
num2 = System.Windows.Forms.UnsafeNativeMethods.RegisterClass(wc);
}
while ((num2 == 0) && (Marshal.GetLastWin32Error() == 0x582));
}
}
}
if (num2 == 0)
{
this.windowProc = null;
throw new Win32Exception(num3);
}
}
this.registered = true;
}
private void RegisterClass()
{
string className;
System.Windows.Forms.NativeMethods.WNDCLASS_D wc = new System.Windows.Forms.NativeMethods.WNDCLASS_D();
if (NativeWindow.userDefWindowProc == IntPtr.Zero)
{
string lpProcName = (Marshal.SystemDefaultCharSize == 1) ? "DefWindowProcA" : "DefWindowProcW";
NativeWindow.userDefWindowProc = System.Windows.Forms.UnsafeNativeMethods.GetProcAddress(new HandleRef(null, System.Windows.Forms.UnsafeNativeMethods.GetModuleHandle("user32.dll")), lpProcName);
if (NativeWindow.userDefWindowProc == IntPtr.Zero)
{
throw new Win32Exception();
}
}
if (this.className == null)
{
wc.hbrBackground = System.Windows.Forms.UnsafeNativeMethods.GetStockObject(5);
wc.style = this.classStyle;
this.defWindowProc = NativeWindow.userDefWindowProc;
className = "Window." + Convert.ToString(this.classStyle, 0x10);
this.hashCode = 0;
}
else
{
System.Windows.Forms.NativeMethods.WNDCLASS_I wndclass_i = new System.Windows.Forms.NativeMethods.WNDCLASS_I();
bool flag = System.Windows.Forms.UnsafeNativeMethods.GetClassInfo(System.Windows.Forms.NativeMethods.NullHandleRef, this.className, wndclass_i);
int error = Marshal.GetLastWin32Error();
if (!flag)
{
throw new Win32Exception(error, System.Windows.Forms.SR.GetString("InvalidWndClsName"));
}
wc.style = wndclass_i.style;
wc.cbClsExtra = wndclass_i.cbClsExtra;
wc.cbWndExtra = wndclass_i.cbWndExtra;
wc.hIcon = wndclass_i.hIcon;
wc.hCursor = wndclass_i.hCursor;
wc.hbrBackground = wndclass_i.hbrBackground;
wc.lpszMenuName = Marshal.PtrToStringAuto(wndclass_i.lpszMenuName);
className = this.className;
this.defWindowProc = wndclass_i.lpfnWndProc;
this.hashCode = this.className.GetHashCode();
}
this.windowClassName = this.GetFullClassName(className);
this.windowProc = new System.Windows.Forms.NativeMethods.WndProc(this.Callback);
wc.lpfnWndProc = this.windowProc;
wc.hInstance = System.Windows.Forms.UnsafeNativeMethods.GetModuleHandle(null);
wc.lpszClassName = this.windowClassName;
short num2 = System.Windows.Forms.UnsafeNativeMethods.RegisterClass(wc);
if (num2 == 0)
{
int num3 = Marshal.GetLastWin32Error();
if (num3 == 0x582)
{
System.Windows.Forms.NativeMethods.WNDCLASS_I wndclass_i2 = new System.Windows.Forms.NativeMethods.WNDCLASS_I();
if (System.Windows.Forms.UnsafeNativeMethods.GetClassInfo(new HandleRef(null, System.Windows.Forms.UnsafeNativeMethods.GetModuleHandle(null)), this.windowClassName, wndclass_i2) && (wndclass_i2.lpfnWndProc == NativeWindow.UserDefindowProc))
{
if (System.Windows.Forms.UnsafeNativeMethods.UnregisterClass(this.windowClassName, new HandleRef(null, System.Windows.Forms.UnsafeNativeMethods.GetModuleHandle(null))))
{
num2 = System.Windows.Forms.UnsafeNativeMethods.RegisterClass(wc);
}
else
{
do
{
domainQualifier++;
this.windowClassName = this.GetFullClassName(className);
wc.lpszClassName = this.windowClassName;
num2 = System.Windows.Forms.UnsafeNativeMethods.RegisterClass(wc);
}while ((num2 == 0) && (Marshal.GetLastWin32Error() == 0x582));
}
}
}
if (num2 == 0)
{
this.windowProc = null;
throw new Win32Exception(num3);
}
}
this.registered = true;
}
