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Jan-Willem Bats
Guest
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 Posted: Wed May 16, 2007 3:24 pm Post subject: RemoveAllSeries doesn't dispose Series... why not? |
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Dear Support,
I am using RemoveAllSeries() to remove all the series from my chart.
Right after doing so, I reload the same data again and give them the same
Series names.
Then I get an EComponentError saying there's already a component with the
name Series25 (this is the name of the first Series in the data I'm
reading).
I have to manually remove the chart components before it will work the way I
want it to.
I wrote this in order to realize the desired functionality:
void __fastcall TfrmChart::removeAndDisposeAllSeries(){
vector<TChartSeries*> series;
// fill vector with all series
for (int i = 0; i < chart->SeriesCount(); i++){
series.push_back(chart->Series[i]);
}
chart->RemoveAllSeries();
// remove components manually using the series vector
for (int i = 0; i < series.size(); i++){
chart->RemoveComponent(series.at(i));
}
}
The docs say that RemoveAllSeries removes them but doesn't free them up.
Why not? Why does it work this way?
Why isn't there a RemoveAllSeries(bool dispose) method for the cases where
you *really* want to get rid of your Series?
Sincerely,
Jay |
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Narcís Calvet
Guest
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| Posted: Wed May 16, 2007 3:39 pm Post subject: Re: RemoveAllSeries doesn't dispose Series... why not? |
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Hi Jay
Jan-Willem Bats wrote:
| Quote: | Dear Support,
I am using RemoveAllSeries() to remove all the series from my chart.
Right after doing so, I reload the same data again and give them the
same Series names.
Then I get an EComponentError saying there's already a component with
the name Series25 (this is the name of the first Series in the data
I'm reading).
I have to manually remove the chart components before it will work
the way I want it to.
I wrote this in order to realize the desired functionality:
void __fastcall TfrmChart::removeAndDisposeAllSeries(){
vector<TChartSeries*> series;
// fill vector with all series
for (int i = 0; i < chart->SeriesCount(); i++){
series.push_back(chart->Series[i]);
}
chart->RemoveAllSeries();
// remove components manually using the series vector
for (int i = 0; i < series.size(); i++){
chart->RemoveComponent(series.at(i));
}
}
The docs say that RemoveAllSeries removes them but doesn't free them
up.
Why not? Why does it work this way?
Why isn't there a RemoveAllSeries(bool dispose) method for the cases
where you *really* want to get rid of your Series?
|
In that case try using:
Chart1->FreeAllSeries();
--
Best Regards,
Narcis Calvet
Steema Support Central
http://support.steema.com
"Important note: If you are a TeeChart registered customer, please post your
support questions at Steema's Support monitored Forums for customers:
http://support.steema.com for a prompter reply." |
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Marjan Slatinek
Guest
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| Posted: Thu May 17, 2007 8:13 am Post subject: Re: RemoveAllSeries doesn't dispose Series... why not? |
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Hi, Jan-Willem Bats.
The RemoveAllSeries() only "disconnects" series from chart (sets series
ParentChart property to NULL) and does not actually free series. To free all
series connected to specific chart, use the following code:
tChart1->FreeAllSeries();
Regards,
Marjan Slatinek
www.steema.com
"Jan-Willem Bats" <jwbats (AT) observator (DOT) com> wrote in message
news:464adbfc (AT) newsgroups (DOT) borland.com...
| Quote: | Dear Support,
I am using RemoveAllSeries() to remove all the series from my chart.
Right after doing so, I reload the same data again and give them the same
Series names.
Then I get an EComponentError saying there's already a component with the
name Series25 (this is the name of the first Series in the data I'm
reading).
I have to manually remove the chart components before it will work the way
I want it to.
I wrote this in order to realize the desired functionality:
void __fastcall TfrmChart::removeAndDisposeAllSeries(){
vector<TChartSeries*> series;
// fill vector with all series
for (int i = 0; i < chart->SeriesCount(); i++){
series.push_back(chart->Series[i]);
}
chart->RemoveAllSeries();
// remove components manually using the series vector
for (int i = 0; i < series.size(); i++){
chart->RemoveComponent(series.at(i));
}
}
The docs say that RemoveAllSeries removes them but doesn't free them up.
Why not? Why does it work this way?
Why isn't there a RemoveAllSeries(bool dispose) method for the cases where
you *really* want to get rid of your Series?
Sincerely,
Jay
|
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