The Sinclair QL Forum

Have you thought out how this could be done? I was only considering just scanning SuperBASIC name table and list out names of unset variables. Easily done, soon... I agree, this would be the easiest solution. I've written a rough version. It scans through the name table looking for simple float or ...

Re SMSQ/E BASIC unset variables: As much as I love SMSQ/E Basic, I dislike the way unset variables default to zero. I have almost teared my hair out trying to find a bug in a large listing, only to eventually find it was a simple typo in a long variable name. Tempted to write procedure to list unse...

If it has a value, it's name type (first byte of NT entry) will be 2, else 0. Yes, I have tested it. PARUSE is also working outside functions. Unfortunately it has a bug (on Minerva and SMSQ/E): Because of the bug in PARUSE, we could instead use Jan's earlier formula, and have code such as ... IF B...

Is there a S(uper)BASIC-function which tests if a variable is set? e.g.: REMark Turbo Toolkit required for END_CMD IF NOT variableSet(a_%):END_CMD REMark Alternative: IF NOT variableSet("a_%"):END_CMD REMark Continue with command file only if a_% is set REMark ... (your commands) END_CMD ...

Is there a S(uper)BASIC-function which tests if a variable is set? The DIY toolkit volume "P" has a function called "UNSET". See: http://www.dilwyn.me.uk/tk/index.html This returns 1 if no value has been set, otherwise 0. E.g. okay = NOT UNSET(var%) If there are commands (I don'...

Perhaps experimenting with the keyboard settings on QPC2's front panel could make a difference to the keyboard queue handling. Taking Steve's idea a bit further, we can implement a more robust version of VAL by using S*BASIC's coercion ability, to return any data type, coerced into a string. If our ...

Hi all, I can recommend this attempt at an expression evaluator ... DEFine FuNction VAL(x$) LOCal result result = 0 IF x$ <> FILL$(" ",LEN(x$)) COMMAND_LINE TYPE_IN "result = " & x$ & CHR$(10) TYPE_IN "CONTINUE" & CHR$(10) STOP END IF RETurn result END DEFin...

tofro wrote:
in case you have Minerva or SMSQ/E, you can pipe the VAL "evaluation line" as a program line to an S*Basic child job and have the result piped back from there.

Hi tofro,

Can you give an example of how this can be done in QPC2, please.

EmmBee

Hi,

Yes, I've tried to load a _pic file, but get the error message of "Picture mode not supported".

Michael

Hi Giorgio,

I have installed the DBAS extension, and can now display QTImage's front panel.
Next, how can I display your wonderful pictures, please?

Michael