When working with PDF manipulation libraries in Delphi, range check errors can be particularly frustrating because they often occur deep within complex document structures. These errors are especially challenging because they may appear intermittently, depending on the specific PDF structure…
During add Delphi 5 compatibility to the Purchase Order calculation sample of HotXLS Delphi Excel Spreadsheet component, an error occurred while compiling under Delphi 5. The line which set the date format of the TDateTimePicker control does not compile:
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DateTimePicker.Format := 'MM/dd/yyyy';
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function _ftol( f: double) : Integer; cdecl;
begin
asm
lea eax, f
fstp qword ptr [eax]
end;
result := Trunc(f);
end;
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Above is a Delphi inline asm version of the ftol (Floating Point to Integer Conversion) function used by our HotPDF Delphi PDF component. When compiling above Delphi codes in the 64-bit target platform, Delphi will raise below error: [dcc64…