So I'm using this thingie called PSET...

[NickFitz]

First, you need to set the AutoRedraw property to True before you do the drawing - the system then knows to keep track of what you draw. Otherwise, it expects you to have a Paint event handler that will redraw it every time.

You can check if this is the problem by hiding the window behind another window and then bringing it to the front again - if the PictureBox isn't redrawn, then change the code to set AutoRedraw before drawing, and try again - it should now work as expected.

(The hide/show test may also be graphics-driver-dependant, so do the AutoRedraw thing even if it seems unnecessary after the first hide/show test.)

If that's working but it's still not saving correctly, try changing

SavePicture frmWfaxdisp.picDisplay.Picture, filetosave

to

SavePicture frmWfaxdisp.picDisplay.Image, filetosave

and see if that works.

Finally, some people claim that setting the PictureBox's Picture property to the value of its Image property will work, but that sounds a bit voodoo chicken to me - also, the VB docs seem to suggest that the Picture property is read-only at runtime. But if all the above fails, give that a try - revert the change to the SavePicture call as well if you try this.

[zeitghost]

Danke.

I shall try that tomorrow.

I frigged about with that image thingie last week to no great avail... but then I don't know what I'm doing anyway...

I loaded up my, er, "copy" of VB3 pro today, coz it's got the MSCOMM thingie in it...

I've hacked about with the VBTERM example & have it writing stuff to a Picture that I've added.

It actually shows the range of the pll chip is quite limited, I may have to shift some bits in the PIC to restore it to something more applicable.

Or alternatively, I may attempt to use the external VRef I designed onto the board...

First, you need to set the AutoRedraw property to True before you do the drawing - the system then knows to keep track of what you draw. Otherwise, it expects you to have a Paint event handler that will redraw it every time.

You can check if this is the problem by hiding the window behind another window and then bringing it to the front again - if the PictureBox isn't redrawn, then change the code to set AutoRedraw before drawing, and try again - it should now work as expected.

Yup.

Did that, it now redraws ok... still doesn't save the image though...

I'm onto the next suggestion now, with the .Image thingie instead of the .Picture thingie...

This is so exciting...


Yes! Yes! Yes!.... the .Image thing does the business...

Muchos gracias...

[NickFitz]

Muchos gracias...

HTH

You'd never guess that I've never done any VB programming, would you

[DaveB]

HTH

You'd never guess that I've never done any VB programming, would you

Tell Bob and the rest of the Mumbai posse well done

[zeitghost]

HTH

You'd never guess that I've never done any VB programming, would you

Not really, no... it seemed your usual sort of now you mention it...



I'm moving on now to the 4046 PLL setup, coz it's set for a centre frequency of about 4.5kHz, which is far too high.

I shall have to redimension things a bit... to bring it down to say 2.5kHz...



Well, I've done that & it does appear to receive stuff...

After much frigging around with pixel counts, it displays stuff.

Oddly, the timing seems very variable... I can't decide if VB is dropping characters or if the PIC16F88 is sampling randomly... I find it difficult to believe that the pic could be as far out as it looks on the screen... but I may well be wrong there.


It is indeed very odd... if I make the display window larger, the timing goes all to pot...

How weird is that?


Down to the speed of the pc, I've migrated the code on a floppy over to a slightly faster machine & the scan rate doesn't change any more.

Since it's running XP, however, the serial handling seems to have slowed to a crawl...

[xoggoth]

I gave a load of old books including a beginner's guide to VB3 to the Barnardo's charity shop last year. If you hurry Z it may still be there.

[zeitghost]

I gave a load of old books including a beginner's guide to VB3 to the Barnardo's charity shop last year. If you hurry Z it may still be there.

Thanks, Xogg, I'll pop along tomorrow morning. Probably gone though...