Re: ShowCursor(FALSE) should hide cursor!

On Wed, 28 Dec 2005 09:06:54 -0800, "Alexander Grigoriev"
<alegr@xxxxxxxxxxxxx> wrote:

>Hiding/restoring a soft cursor during drawing was always handled in Windows
>by the video driver/GDI transparently for the apps.
>'Mouse droppings" were happening in MSDOS graphical apps.
>
>"Doug Harrison [MVP]" <dsh@xxxxxxxx> wrote in message
>news:aie5r19p1l9ou5g6h0q48qnfkqfmghd90e@xxxxxxxxxx
>>
>> It was really important back in the day when video cards didn't support
>> the
>> cursor in hardware. A software cursor must be hidden before drawing over
>> the area where it resides, else you can get an effect known as "mouse
>> droppings":
>>

You should've kept reading, as I ended my message as follows:

>>(I believe Windows always did the
>>hiding/showing for you in BeginPaint/EndPaint, but other OS's did not.)

I'd be interested to learn how the "video driver/GDI" could do this
transparently; it seems like they exist at too low a level to handle this
well.

--
Doug Harrison
Visual C++ MVP
.

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