Demo loading PNG Picture

[scalion]

Hello, i seen there somebody need to load PNG picture in gb32 and display it. Now you can do that with my little demo using zlib32.dll, and alpha channel is supported .
Hope that help you.

ChargerPng.zip (772.23 KB)

[wbtcpip]

good demo ...thank you

[Emil_halim]

Hi 


when run your demo , i got a full size window and there is no picture appear at all.

also a MessageBox appear telling me that End of file Reached.


so any help please?

BTW , my system is , window 10 intel i core 5. 

[Emil_halim]

Hay , sny body here....


really i need to know where is the issue ?

, thanks   

[scalion]

Hi,
I have win10 and icore5 too and that's work fine...
Maybe a problem with the includeds files ?
In first, have you modified something ?
In doubt try to re-extract the g32 file...
On wich line is the cursor in GFA Editor after error message ?
Try to disable your GfaExtensions to see what happen.
Tell me more about your problem, i will parse.

[Emil_halim]

Hi
first of all , thank for your respond.


I think ,it is not included files , because i changed like this 
'fic$ = ":Papillon.png"


' To open your personnals pictures replace previous line by this next :


FileSelect "*.PNG", "", fic$ so i can select a file by myself.



This is only what i modify ,when it does not work.

re-extracting done , the same problem.

did not allowed my Extension.

here is a screen shot that what i can tell you

Attachments:

[scalion]

Ok,
I know this problem. Certains programs, like paint 3d for example, use a specific PNG format not described in the RFC1950 concerning Zlib or PNG Specification 1.2.
Can you put your PNG file in your next reply and i will try to adapt my function. The only problem is that if the unexpected is in the compression format used I may not be able to do anything. In this case I advise you to open your PNG file in an old PhotoFiltre 7 style program and have it "save as" in the standard PNG format. This should solve the problem, (until I find a solution of course), It will solve the problem but I'm sure it's not really the answer you expect.

Thank you for the print-screen but we do not see the line where the program stopped.
It does not matter, I'll see when I have the PNG file you use.

Thank you for your interest in my work.
Good evening, see you next time.

[Emil_halim]

Thanks Nicolas,


The Image i used is your Reversi\Textures\ascii.png file in your Reversi Game.

Actually , my goal  is to collect a useful snippet in a lib folder of my Extension , so that all of use can reuse this code easily , see me next Demo in GFA Basic Extension.


so i am tiring that putting the your png_loader procedures in a PNGLoder.lib in GFA Ext lib.


any way , really i appreciated your help , Keep up your cool demos, i think that my Extension will help you a lot.   

[scalion]

Hi,
Sorry but i tried with the ascii.png and... that's work. (why )
Very strange...really weird... I tried both many png and that's worked too.
But i know i tried at the time i created this feature there's certain PNG dont work.
Since then I have not been able to reproduce this loading problem !!!
I can't help you for this time And that annoys me greatly.

Have courage, good luck. If you manage to solve this problem of "end of file reached" I thank you for posting a small message.

[Emil_halim]

No problem , thanks you for your help.

I will post if i found a solution. 

[scalion]

Now i know the solution of your problem :

I dont seem before... sorry. You dont change the ":moi.png" too and it's a ressource included file.

You use the version of GFA-Basic who dont use EOF in ":File".

The New version of GFA-BAsic will correcting this bug.

What i found :

In earlier versions, EOF() didn't work correctly with text files as "internal resource files" (those files that are included in the source code and which name begins with ":"): EOF() was true after reading the first line even if there are many more text-lines in the "internal resource file" (it is the required function of TextEOF to test for an end-of-text marker, not EOF). As of gfawin23.ocx version 2.341, this issue has been fixed.

The only workaround for this old error was to set up a Try...Catch structure around the file processing and use this in conjunction with the 'End of File reached' error message to emulate the function of EOF.