public void WindowCallback_SendMessage()
{
WindowClassInfo myClass = new WindowClassInfo
{
ClassName = "WindowCallback_SendMessage",
WindowProcedure = (window, message, wParam, lParam) =>
{
return(42);
}
};
Atom atom = Windows.RegisterClass(ref myClass);
atom.IsValid.Should().BeTrue();
try
{
WindowHandle window = Windows.CreateWindow(atom, style: WindowStyles.Minimize | WindowStyles.Diabled);
window.IsInvalid.Should().BeFalse();
try
{
window.SendMessage(MessageType.Activate).Should().Be((LResult)42);
}
finally
{
window.DestroyWindow();
}
}
finally
{
Windows.UnregisterClass(atom);
}
}
public void GetClassLong_GlobalAtom()
{
WindowHandle window = new WindowHandle();
try
{
window = Windows.CreateWindow("bUttOn", "GetClassLong_GlobalAtom", WindowStyles.Diabled | WindowStyles.Minimize);
window.IsInvalid.Should().BeFalse();
Atom atom = window.GetClassLong(ClassLong.Atom);
atom.IsValid.Should().BeTrue();
window.DestroyWindow();
window = Windows.CreateWindow(atom, "GetClassLong_GlobalAtom", WindowStyles.Diabled | WindowStyles.Minimize);
window.GetClassName().Should().Be("Button");
}
finally
{
if (!window.IsInvalid)
{
window.DestroyWindow();
}
}
}
public void CreateWindow_Global()
{
WindowHandle window = default;
try
{
window = Windows.CreateWindow("BUTTON", "CreateWindow_Global", WindowStyles.Diabled | WindowStyles.Minimize);
window.IsInvalid.Should().BeFalse();
}
finally
{
if (!window.IsInvalid)
{
window.DestroyWindow();
}
}
}
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
WindowClassInfo myClass = new WindowClassInfo
{
ClassName = "RegisterClass_GetSetClassLong",
Style = ClassStyle.HorizontalRedraw,
WindowProcedure = CallDefaultProcedure,
ClassExtraBytes = 80
};
Atom atom = Windows.RegisterClass(ref myClass);
atom.IsValid.Should().BeTrue();
try
{
WindowHandle window = Windows.CreateWindow(
atom,
"RegisterClass_GetSetClassLong_Window",
WindowStyles.Diabled | WindowStyles.Minimize);
window.IsInvalid.Should().BeFalse();
try
{
var info = Windows.GetClassInfo(Modules.GetModuleHandle(null), atom);
info.ClassExtraBytes.Should().Be(80);
IntPtr result = Windows.SetClassLong(window, (ClassLong)72, (IntPtr)0x0000BEEF);
result.Should().Be(IntPtr.Zero);
window.GetClassLong((ClassLong)72).Should().Be((IntPtr)0x0000BEEF);
}
finally
{
window.DestroyWindow();
}
}
finally
{
Windows.UnregisterClass(atom, null);
}
}
public void GetClassName_Global()
{
WindowHandle window = default;
try
{
window = Windows.CreateWindow("button", "GetClassName_Global", WindowStyles.Diabled | WindowStyles.Minimize);
window.IsInvalid.Should().BeFalse();
window.GetClassName().Should().Be("Button");
}
finally
{
if (!window.IsInvalid)
{
window.DestroyWindow();
}
}
}
public void RegisterClass_UnregisterActiveWindow()
{
WindowClassInfo myClass = new WindowClassInfo
{
ClassName = "RegisterClass_UnregisterActiveWindow",
WindowProcedure = CallDefaultProcedure,
};
Atom atom = Windows.RegisterClass(ref myClass);
atom.IsValid.Should().BeTrue();
try
{
WindowHandle window = Windows.CreateWindow(
atom,
"RegisterClass_UnregisterActiveWindow",
WindowStyles.Diabled | WindowStyles.Minimize);
window.IsInvalid.Should().BeFalse();
try
{
Action action = () => Windows.UnregisterClass(atom, null);
action.Should().Throw <IOException>().And
.HResult.Should().Be((int)WindowsError.ERROR_CLASS_HAS_WINDOWS.ToHResult());
}
finally
{
window.DestroyWindow();
}
}
finally
{
Windows.UnregisterClass(atom, null);
}
}