I tried to disable ABSQuery1 controls before exporting data :
procedure TForm1.QExport4Dialog1BeforeExportRow(Sender: TQExport4;
Row: TQExportRow; var Accept: Boolean);
begin
ABSQuery1.DisableControls;
end;
But I get :
> [dcc32 Error] Unit1.pas(75): E2003 Undeclared identifier: 'TQExport4'
> [dcc32 Error] Unit1.pas(76): E2003 Undeclared identifier:
> 'TQExportRow' [dcc32 Error] Unit1.pas(204): E2005 'TQExport4' is not a
> type identifier [dcc32 Error] Unit1.pas(205): E2005 'TQExportRow' is
> not a type identifier [dcc32 Fatal Error] Project1.dpr(15): F2063
> Could not compile used unit 'Unit1.pas'
What am I doing wrong ?
Your error messages all indicate that you have not used the units in which the named symbols are declared. Add those units, those that declare TQExport4 and TQExportRow, to the uses clause of your Unit1.
It's usually worth consulting the documentation when you encounter a compiler error that you do not understand. Search for the error code, for example E2003. The documentation says:
The compiler could not find the given identifier - most likely it has been misspelled either at the point of declaration or the point of use. It might be from another unit that has not mentioned a uses clause.
The final sentence covers your scenario, although the author got in a tangle when writing that text and the words don't make a lot of sense. Sigh.
Incidentally, the example at the bottom of that documentation page made me sad. The author indicates a preference, when correcting mis-named variables, for the option requiring the fewest key strokes. Never mind getting the name right, just make it compile with the fewest key strokes and who cares about the next person to read the code. Pah!
Related
I have a problem to set watermark image format in the TgtImageWatermarkTemplate component (which is part of the Gnostice PDFtoolkit VCL library). I have the following code:
var
Watermark: TgtImageWatermarkTemplate;
begin
...
// create and set watermark properties
Watermark := TgtImageWatermarkTemplate.Create;
Watermark.ImageFormat := ofJPEG; // <- this line fails the compilation
...
end;
But it fails to compile with the following error:
[DCC Error] Unit1.pas(186): E2003 Undeclared identifier: 'ofJPEG'
[DCC Fatal Error] Project1.dpr(5): F2063 Could not compile used unit 'Unit1.pas'
Failed Elapsed time: 00:00:01.5
In which unit is the ofJPEG identifier declared (I think it's member of the TgtOutFormat enumeration)? Which unit should I add to my uses clause?
Please include gtCstPDFDoc unit in your PAS file. The enumeration TgtImageFormat is from that.
UPDATE: The enumeration values start with if and so it is ifJPEG.
I am toying around in Delphi XE6, and add this procedure on a button:
procedure TTabbedForm.btnLoadingClick(Sender: TObject);
var
dlg: Unit2;
begin
dlg := Form2.Create(nil);
Form2.ShowModal();
end;
Delphi gives me the following error while compiling:
[DCC Error] TabbedTemplate.pas(53): E2029 '.' expected but ';' found
[DCC Error] TabbedTemplate.pas(55): E2029 ';' expected but 'BEGIN' found
[DCC Fatal Error] Speelpleintjes.dpr(7): F2063 Could not compile used unit 'TabbedTemplate.pas'
Line 53 being: dlg: Unit2;
Honestly i'm quite puzzled, the syntax seems correct, the procedure is auto generated from the events tab.
Any suggestions?
If Unit2 is another unit in your project (judging by it's name it probably is), it can't be used as a type directly. Units only declare things. That's why the compiler is expecting a . since you can prefix an identifier with the unit's name to direct to a declaration in that specific unit.
To correct this, write dlg: TForm2;
Also it's common practice to call constructors from the class declaration, not a variable so change it to:
dlg := TForm2.Create(nil);
Or use the Form2 variable, which typically will hold an instance of TForm2 already. By default extra forms added to a Delphi project are created hidden, ready for Show or ShowModal.
I just downloaded the ADSI and it seems to be that it is not compatible with Delphi Embarcadero XE4.
When I try to compile one of the examples, I get this error:
[dcc32 Error] adshlp.pas(128): E2003 Undeclared identifier: 'NULL'
And this is the line:
varArr := NULL;
What's wrong?
Null used to be declared in the System unit, so it was available globally. In Delphi 6, all Variant-related code moved out of that unit and into the new Variants unit. Since Null is a function that returns a Variant, Null was included in the move, so it is no longer available implicitly.
To fix the old code, simply add Variants to your uses clause in any unit that needs it:
uses ..., Variants;
I was screwing around with debug setting on my compiler and now I am getting these errors that I can't seem to get rid of.
[DCC Error] HASPCODE.PAS(223): E2003 Undeclared identifier: 'Result'
It didn't complain before, but now no matter what I said the debugging settings to it keeps raising the above error just for the HASPCODE.PAS file only.
For instance, Here is one of the functions where the error is raised.
function THasp.IsHasp:Boolean;
begin
Result := fIsHasp; <<=======
end;
The implicit function Result variable is only available when the extended syntax compiler option is enabled.
The Result variable. In the {$X+} mode, the predefined
variable Result can be used within a function body to hold
the function's return value.
I need a bit of help; I'm helping a friend port a Delphi app built years back to newer versions of Windows, as it currently only runs on Windows 95.
The code utilises 3rd party libraries from Woll2Woll for DB operations.
One of these libraries generates the error E2003 Undeclared identifier: 'self'.
I've been through a number of sites via Google and with my limited knowledge of Delphi (stemming from my Pascal training about 12 years ago and extrapolating my slightly rusted PHP, BASH, ColdFusion and ASP coding skills), I've run into a brick wall - I'm strapped for time and can't make sense of the info I'm coming across on the web.
The problematic code segment is from the wwwQuery.pas file and looks like this:
{$ifdef wwDelphi3Up}
procedure TwwQuery.OpenCursor(InfoQuery: Boolean);
{$else}
procedure TwwQuery.OpenCursor;
{$endif}
begin
{$ifdef wwDelphi3Up}
inherited OpenCursor(InfoQuery);
{$else}
inherited OpenCursor;
{$endif}
//Modded by Arie
//wwSaveAnswerTable(self, Handle, FAnswerTable);
wwSaveAnswerTable(self, Handle, 'FAnswerTable');
end;
The precise error messages are:
[DCC Error] wwQuery.pas(243): E2003 Undeclared identifier: 'self'
[DCC Error] wwQuery.pas(244): E2029 '.' expected but ';' found
[DCC Fatal Error] wwcommon.pas(285): F2063 Could not compile used unit 'wwQuery.pas'
Line 243 is the 2nd last line, just above the end;
The wwSaveAnswerTable function looks like this:
Function wwSaveAnswerTable(ADataSet: TDBDataSet; AHandle: HDbiCur; tableName: string): boolean;
What must I change the Self parameter to, to stop the compile error?
Thanks a stack.
The problem is related to compiler define wwDelphi3Up or any related up in code.
As you see next error message: [DCC Error] wwQuery.pas(244): E2029 '.' expected but ';' found
Compiler expects end of program, and line wwSaveAnswerTable(self, Handle, 'FAnswerTable'); are not compiled inside OpenCursor method. That's why Self is not defined.
You don't need to change parameter, because for sure will affect functionality.
Try to compile it without defines, if you are not use an ancient version of Delphi:
procedure TwwQuery.OpenCursor(InfoQuery: Boolean);
begin
inherited OpenCursor(InfoQuery);
wwSaveAnswerTable(self, Handle, 'FAnswerTable'); // Here prob FAnswerTable without quotes
end;