c++ - Writing data using libxl library -


i calling xlcreatebook() function. before program holds more memory because reading huge file. after called xlcreatebook() returns null pointr sheet variable.

but once loaded less size file xlcreatebook() functions working correctly. me out of this.

which method returns null pointer? addsheet()? it's strange related size write, since @ sheet creation, have not added data yet. book::errormessage() when null sheet pointer?

maybe trying save big old xls format, , should create xlsx file, using xlcreatexmlbook() instead?

if lacking memory because of else, there not can done software if lack physical memory. except detecting , returning 'clean' error


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