PureBasic Forums - English

Thankyou @miso and @User_Russian,
After many sweary dead-ends I took a different approach. I had to move the code earlier in the program and it worked - after a fashion.
Whenever I tried to create a blank image I got the white background, even though other transparent images are created elsewhere ...

Does anyone have any idea what could be causing this behaviour ?
I am trying to create a transparent image on which to write some text which can then be turned upside down.
When I added in the text it always appeared on a white background, so I stripped out that part, just leaving the image empty ...

IceSoft was kind of right and lead me to the solution.
The code which drew the layers was erroneously called twice. The first time was after drawing the 'top' layer (calque4). Essentially the program is reversing the order of the layers, so it drew the top layer, added it to the background. cleared ...

Unfortunately I cannot create a small bit of code which does the same.
I did indeed write a small example, but it behaves exactly as it should. The program which it is part of is very large.
I was hoping that at some point someone had come across something similar and had a eureka moment.

Your code works correctly for me also.
I don't know if it makes any difference but the 'background' I am merging them onto is another (non.transparent) image, rather than a canvas.

Hi all,
I have created 4 transparent images which need to be layered in a specific order.
When I draw them onto the background using the following code:

DrawAlphaImage(ImageID(#calque1),(188),100)
DrawAlphaImage(ImageID(#calque2),(188),100)
DrawAlphaImage(ImageID(#calque3),(188),100 ...

If you are using a Canvas gadget then the #PB_Cursor_Invisible flag can be used to hide the system pointer when it is over the gadget.
Then you could draw a sprite at the mouse co-ordinates.
(See the CanvasGadget example program, although this does use a different system cursor, but the basic ...

The 'RunProgram' command is what you need.
Something of the form:
RunProgram ("vlc"," path to filename ","")

This works as on my Linux setup as is, but you may have to adjust things for another OS.
For example, if VLC is not included in your PATH, you may have to provide the full path to the ...

This should do the trick.

I have just switched over from Mint 19 to 20 and, when I click on the 'Compile/Run' button I get the following error message:

13:39:10] [WARNING] GLib-GIO (DEBUG): _g_io_module_get_default: Found default implementation gvfs (GDaemonVfs) for ‘gio-vfsâ€

It doesn't appear to affect the program ...

Thanks Marc56us for the very fullsome reply.
What I am actually trying to accomplish is significantly more in depth than calculating disk space.(It just seemed like a nice trivial example to be getting on with.)
At least now know why it wasn't working.
I think I shall resort to writing out a shell ...

I am trying to automate certain tasks from PB, using the native OS terminal, but without success.
As an example:
rp = RunProgram("xterm", "", "", #PB_Program_Open | #PB_Program_Write)
WriteProgramStringN(rp,"df -h")
CloseProgram(rp) I expected this to open the terminal, then write the command 'df ...

I guess everyone's brain just has a preferred way of looking at things.
When using BBC Basic I've always used a function to 'invert' the y coordinate, just because I think of layout that way.
e.g. PLOT 69,xpos%,FN_yinv(pos%)
A minor overhead, but if you're working in interpreted BASIC, you're going ...

BBC Basic does use 'conventional' coordinates, although it uses 'Graphic Units' in which 1 pixel is equal to 2 g.u. . This of course conflicts with the text coordinate system, unless text was printed at the graphics cursor.
In memory it is stored from the top left corner - getting my head round the ...

Such a silly thing to miss.
Thanks a lot, infratec