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pause in CD3DApplication

Started by tscott1213 Jun 29, 2004 at 8:43 PM 2 replies 350+ views

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Jun 29, 2004 at 8:43 PM

Evening all. I am working through microsoft's CD3DApplication class and don't understand some of the reasons for the calls to Pause(). For example, while in HandlePossibleSizeChange() (which deals with a window'd D3D app being resized) they call pause() just before reseting the 3D environment. Isn't the application effectively paused() until this procedure relinquish control to the message pump? Thanks for the help. Todd

hplus0603

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hplus0603

Jun 29, 2004 at 8:49 PM

While re-sizing windows, Windows will call the window message proc directly, without queuing messages through the pump.

tscott1213

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tscott1213

Jun 30, 2004 at 8:51 AM

I definately was not aware of that.

Thanks for the help, I would have never figured that out on my own.

Todd

tscott1213

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tscott1213

Jun 30, 2004 at 9:14 AM

The more I think about this the more concerned I become.

Pausing the game loop doesn't seem to be enough of a failsafe. For example, if I have a Key combination setup to alternate between full-screen and windowed mode couldn't windows trigger a switch while I am in the middle of resetting devices? So, the program could be reloading video resources in one function and calling reset in another?

Am I thinking about this correctly?

Can someone recommend a good tutorial/tech doc that explains this and maybe other common windows messaging quirks?

Thanks
Todd

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