Try to print index in popup of showmessage gives an compile time error.
[dcc32 Error] Unit.pas(57): E2003 Undeclared identifier: 'IntToStr'
In my code I am using ShowMessage(IntToStr(J)); J is an integer.
You have to add the SysUtils unit to your calling unit's uses clause.
Related
I created dynamic Dll and i was using a method of this DLL in my Delphi Appliction.
Iam getting these errors, can't really figure out whats the reason.
I declared the method like this
TWithdrawMoney = function(currentBalance,withdrawBalance:double):double;stdcall;
and used it as
Handle := LoadLibrary('C:\Projects\WithdrawMoneyDLL.dll'); //Line 83
if (currentBalance > 0) and (strtofloat(money.Text) <= currentBalance) then
begin
if Handle <> 0 then //Line 96
begin
#withdrawMoney := GetProcAddress(Handle, 'withdrawMoney'); //line 98
currentBalance := withdrawMoney(currentBalance,strtofloat(money.Text));
end;
ShowMessage('Widraw successful');
end
these are the errors that I am are getting.
[dcc32 Error] widrawMoneyPanel.pas(83): E2129 Cannot assign to a read-only property
[dcc32 Error] widrawMoneyPanel.pas(96): E2015 Operator not applicable to this operand type
[dcc32 Error] widrawMoneyPanel.pas(98): E2250 There is no overloaded version of 'GetProcAddress' that can be called with these arguments
[dcc32 Fatal Error] F2063 Could not compile used unit 'widrawMoneyPanel.pas'
I do
RESTRequest1.Method := rmPost;
I get
E2003 Undeclared identifier: 'rmPost'
REST.Client is in the use clause.
Add REST.Types to the uses clause.
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 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!
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.