Type has no component named
lazarus / 12-Debugger

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ronhud · 2018-10-03 10:21

Am I missing something in tryint to use the debugger.  For example :-

I enter into the watchlist window

AQuery.FieldByName('sldate').AsFloat

then use the evaluate option and get the following

Type TSQLQUERY has no component named FIELDBYNAME('sldate').AsFloat.

Is the value really not seeable or is there some way that I have
missed?

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howardpc · 2018-10-03 11:01

gdb, the third party debugger used by default in Lazarus, has no
concept of Pascal functions.
To watch properties such as this you need to insert an extra debugging
float variable in your code, and assign the value of
AQuery.FieldByName('sldate').AsFloat to it in code.
When debugging you can then watch the value of this debugging
variable. Once debugged, you remove the variable.

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ronhud · 2018-10-03 11:11

That is what I have been doing but I hoped there was something
quicker.

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ccrause · 2018-10-03 11:37

Quote from: howardpc on October 03, 2018, 01:01:33 pmgdb, the third
party debugger used by default in Lazarus, has no concept of Pascal
functions.
Also refer to this entry about property methods and gdb.