public void RegisterClass_UnregisterActiveWindow()
{
WindowClass myClass = new WindowClass
{
ClassName = "RegisterClass_UnregisterActiveWindow",
WindowProcedure = CallDefaultProcedure,
};
Atom atom = WindowMethods.RegisterClass(ref myClass);
atom.IsValid.Should().BeTrue();
try
{
WindowHandle window = WindowMethods.CreateWindow(atom,
"RegisterClass_UnregisterActiveWindow", WindowStyles.Diabled | WindowStyles.Minimize);
window.IsValid.Should().BeTrue();
try
{
Action action = () => WindowMethods.UnregisterClass(atom, null);
action.ShouldThrow <IOException>().And
.HResult.Should().Be((int)ErrorMacros.HRESULT_FROM_WIN32(WindowsError.ERROR_CLASS_HAS_WINDOWS));
}
finally
{
WindowMethods.DestroyWindow(window);
}
}
finally
{
WindowMethods.UnregisterClass(atom, null);
}
}
public void WindowCallback_SendMessage()
{
WindowClass myClass = new WindowClass
{
ClassName = "WindowCallback_SendMessage",
WindowProcedure = (window, message, wParam, lParam) =>
{
return(42);
}
};
Atom atom = WindowMethods.RegisterClass(ref myClass);
atom.IsValid.Should().BeTrue();
try
{
WindowHandle window = WindowMethods.CreateWindow(atom, null, WindowStyles.Minimize | WindowStyles.Diabled);
window.IsValid.Should().BeTrue();
try
{
WindowMethods.SendMessage(window, WindowMessage.Activate, 0, 0).Should().Be((LRESULT)42);
}
finally
{
WindowMethods.DestroyWindow(window);
}
}
finally
{
WindowMethods.UnregisterClass(atom, null);
}
}
public void CreateWindow_Global()
{
WindowHandle window = new WindowHandle();
try
{
window = WindowMethods.CreateWindow("BUTTON", "CreateWindow_Global", WindowStyles.Diabled | WindowStyles.Minimize);
window.IsValid.Should().BeTrue();
}
finally
{
if (window.IsValid)
{
WindowMethods.DestroyWindow(window);
}
}
}
public void WindowCallback_Subclass()
{
int value = 42;
WindowClass myClass = new WindowClass
{
ClassName = "WindowCallback_Subclass",
WindowProcedure = (window, message, wParam, lParam) =>
{
return(value);
}
};
Atom atom = WindowMethods.RegisterClass(ref myClass);
atom.IsValid.Should().BeTrue();
try
{
WindowHandle window = WindowMethods.CreateWindow(atom, null, WindowStyles.Minimize | WindowStyles.Diabled);
window.IsValid.Should().BeTrue();
try
{
WindowMethods.SendMessage(window, WindowMessage.Activate, 0, 0).Should().Be((LRESULT)42);
IntPtr previous = IntPtr.Zero;
WindowProcedure subClass = (w, m, wParam, lParam) =>
{
return(WindowMethods.CallWindowProcedure(previous, w, m, wParam, lParam));
};
value = 1999;
previous = WindowMethods.SetWindowProcedure(window, subClass);
WindowMethods.SendMessage(window, WindowMessage.Activate, 0, 0).Should().Be((LRESULT)1999);
GC.KeepAlive(subClass);
}
finally
{
WindowMethods.DestroyWindow(window);
}
}
finally
{
WindowMethods.UnregisterClass(atom, null);
}
}
public void GetClassName_Global()
{
WindowHandle window = new WindowHandle();
try
{
window = WindowMethods.CreateWindow("button", "GetClassName_Global", WindowStyles.Diabled | WindowStyles.Minimize);
window.IsValid.Should().BeTrue();
WindowMethods.GetClassName(window).Should().Be("Button");
}
finally
{
if (window.IsValid)
{
WindowMethods.DestroyWindow(window);
}
}
}
public void RegisterClass_GetSetClassLong()
{
// Some docs claim that 40 is the max, but that isn't true (at least in recent OSes)
// https://msdn.microsoft.com/en-us/library/windows/desktop/ms633574.aspx
WindowClass myClass = new WindowClass
{
ClassName = "RegisterClass_GetSetClassLong",
Style = ClassStyle.HorizontalRedraw,
WindowProcedure = CallDefaultProcedure,
ClassExtraBytes = 80
};
Atom atom = WindowMethods.RegisterClass(ref myClass);
atom.IsValid.Should().BeTrue();
try
{
WindowHandle window = WindowMethods.CreateWindow(atom,
"RegisterClass_GetSetClassLong_Window", WindowStyles.Diabled | WindowStyles.Minimize);
window.IsValid.Should().BeTrue();
try
{
var info = WindowMethods.GetClassInfo(ModuleMethods.GetModuleHandle(null), atom);
info.ClassExtraBytes.Should().Be(80);
IntPtr result = WindowMethods.SetClassLong(window, (ClassLong)72, (IntPtr)0x0000BEEF);
result.Should().Be(IntPtr.Zero);
WindowMethods.GetClassLong(window, (ClassLong)72).Should().Be((IntPtr)0x0000BEEF);
}
finally
{
WindowMethods.DestroyWindow(window);
}
}
finally
{
WindowMethods.UnregisterClass(atom, null);
}
}
public void GetClassLong_GlobalAtom()
{
WindowHandle window = new WindowHandle();
try
{
window = WindowMethods.CreateWindow("bUttOn", "GetClassLong_GlobalAtom", WindowStyles.Diabled | WindowStyles.Minimize);
window.IsValid.Should().BeTrue();
Atom atom = WindowMethods.GetClassLong(window, ClassLong.Atom);
atom.IsValid.Should().BeTrue();
WindowMethods.DestroyWindow(window);
window = WindowMethods.CreateWindow(atom, "GetClassLong_GlobalAtom", WindowStyles.Diabled | WindowStyles.Minimize);
WindowMethods.GetClassName(window).Should().Be("Button");
}
finally
{
if (window.IsValid)
{
WindowMethods.DestroyWindow(window);
}
}
}
