/// <summary>
/// Retrieves a WindowClass object for use. This will create a new
/// object if there is no such class/style available, or retrun a
/// cached object if one exists.
/// </summary>
internal static WindowClass Create(string className, NativeMethods.ClassStyle classStyle)
{
lock (s_wcInternalSyncObject)
{
WindowClass wc = s_cache;
if (className == null)
{
// If we weren't given a class name, look for a window
// that has the exact class style.
while (wc != null &&
(wc._className != null || wc._classStyle != classStyle))
{
wc = wc._next;
}
}
else
{
while (wc != null && !className.Equals(wc._className))
{
wc = wc._next;
}
}
if (wc == null)
{
// Didn't find an existing class, create one and attatch it to
// the end of the linked list.
wc = new WindowClass(className, classStyle)
{
_next = s_cache
};
s_cache = wc;
}
return(wc);
}
}
internal WindowClass(string className, NativeMethods.ClassStyle classStyle)
{
_className = className;
_classStyle = classStyle;
RegisterClass();
}
