/// <summary>
/// Method used to create the window. When overriding, the <c>hWnd</c> field must be set to the handle of the created window.
/// </summary>
protected virtual SafeHWND CreateWindow()
{
HINSTANCE hInst = GetModuleHandle();
wCls = new WindowClass($"{GetType().Name}+{Guid.NewGuid()}", hInst, WndProc);
return(Win32Error.ThrowLastErrorIfInvalid(CreateWindowEx(0, wCls.Atom, hWndParent: HWND.HWND_MESSAGE, hInstance: hInst)));
}
/// <summary>
/// Method used to create the window. When overriding, the <c>hWnd</c> field must be set to the handle of the created window.
/// </summary>
protected virtual SafeHWND CreateWindow()
{
lock (this)
{
if (!Handle.IsNull)
{
throw new InvalidOperationException("Window handle already exists.");
}
HINSTANCE hInst = GetModuleHandle();
wCls = new WindowClass($"{GetType().Name}+{Guid.NewGuid()}", hInst, WndProc);
return(Win32Error.ThrowLastErrorIfInvalid(CreateWindowEx(0, wCls.Atom, hWndParent: HWND.HWND_MESSAGE, hInstance: hInst)));
}
}