How can I make AllocateHwnd threadsafe?

Question

VCL components are designed to be used solely from the main thread of an application. For visual components this never presents me with any difficulties. However, I would so

Answer 1

Don't use TTimer in a thread, it will never be safe. Have the thread either:

1) use SetTimer() with a manual message loop. You don't need an HWND if you use a callback function, but you do still have to dispatch messages.

2) use CreateWaitableTimer() and then call WaitForSingleObject() in a loop until the timer is signalled.

3) use timeSetEvent(), which is a multi-threaded timer. Just be careful because its callback is called in its own thread so make sure your callback function is thread-safe, and there are restrictions to what you are allowed to call inside that thread. Best to have it set a signal that your real thread waits on an then does its work outside of the timer.