Compiled executable crashes after exit

[thyslo]

Im playing around with the old BlitzBasic 2.1, I recently installed it using The Ultimate Blitz Basic 2.1+ CD.

And I noticed that the executables I create always crash some seconds after they seemingly successfully exited to Workbench. It does not happen when I click "Compile & Run" in TED. Then there is no crash.

But when the binary created in TED with "Create executable.." is started from Workbench it crashes, see the attachement.

This is an WinUAE emaulated A1200 with Basic OS3.1 installation.

The code looks like this:

;Open a screen with 256 colors
Screen 0,0,0,320,256,8,0,"DonkyeKong",1,2
ScreensBitMap 0,0

x = 160 - 8
xmax = 160 + 8
y = 128 - 8
For i=0 To 255
  Plot x,y,i

  x+1

  If x > xmax
    x = 160 - 8
    y+1
  EndIf

Next

MouseWait
End

Has anybody an idea, why it crashes?

[Daedalus]

You need to have the statement WBStartup in your code (I usually add it at the top). This is needed for Blitz to add the code necessary for handling communications with Workbench. If it's left out, the executable will work fine from the Shell (and directly from Blitz), but will crash when run from Workbench.

[thyslo]

Ah this fixed it. And it's a wonderfully easy solution:-)

Thank you very much!