Command dStartDrawing (wd 20)

the command doesent seem to work properly.
It can only retrieve part of the x,y image control positions(image is preloadit with no special parameters like stretch etc,..)
for example i am unable to get coler of first pixel,it just says 0
am i doing somthing wrong?

dStartDrawing(IMG_NoName1)
nPixelColor is int
nPixelColor = dPixelColor(IMG_NoName1, 1, 1)
Trace(nPixelColor)

Hi,

Did you try the dNoErase option?

Regards,
Piet

hi Piet
Tried with the option dNoErase.
Same result.
Could it be i need to download latest od framework or are the dependencies normely build in?

any solution ?

Hi,

You can try to load the image into an image variable. If it works, you know it is a setting of the image control you need to change.

Regards,
Piet

Still got the same error i uploadit gui + code
any insights why this command is not working?

Hi,

Well, looking at the picture, there's a black P in the upper left corner.
The pixelcolor of black is 0.
So no problem here.

Regards,
Piet

hi
actualy x1/y1 is purple its just not big enaugh (not strechted)to see .
so problem persists,also issent coler supose to be shown in RGB?

friendly regards

Hi,

I don't see any purple in your example.
RGB is just a function to generate a color, it cannot be returned as a result.
An RGB color is made up of 3 bytes e.g. indian red is hex #B0171F or RGB(176,23,31) or decimal 2037680.
You can easily see the RGB values in the hex number: #B0=176, #17=23 and #1F=31.
In Windev 22 I have no problem getting a pixelcolor from an image (it even works without dStartDrawing)
This has worked flawlessly even when I was using Windev 16,so I would be very surprised if it was a Windev bug.

Regards,
Piet

Hi,

I tried your code and it works as expected over here.
No need for dStartDrawing as Piet also mentioned
Tested with WD21 and WD23 (don't have WD20 installed anymore…)
Are you sure the image itself is fine? Did you try loading other images and other x,y coordinates?

Arie

solved
I retried it with another image and now its working fine,

should have worked with the old image aswell double checked cordinates/coler/pix,fille,location.
i grabbed the old image of the internet perhapse it had some copy protection embeded.

thanks for the tip