c++ - TDateTime 链接错误

Question

我正在使用 C++ Builder 并收到以下错误:

[ILINK32 Error] Error: Unresolved external '__fastcall System::Internal::Strhlpr::UnicodeFree(System::UnicodeString&)' referenced from C:\PROGRAM FILES (X86)\EMBARCADERO\RAD STUDIO\9.0\LIB\WIN32\DEBUG\VCLE.LIB|ustring
[ILINK32 Error] Error: Unresolved external '__fastcall System::Internal::Strhlpr::UnicodeFromPChar(System::UnicodeString&, char *, bool)' referenced from C:\PROGRAM FILES (X86)\EMBARCADERO\RAD STUDIO\9.0\LIB\WIN32\DEBUG\VCLE.LIB|ustring
[ILINK32 Error] Error: Unresolved external '__fastcall System::Sysutils::StrToDateTime(const System::UnicodeString)' referenced from C:\PROGRAM FILES (X86)\EMBARCADERO\RAD STUDIO\9.0\LIB\WIN32\DEBUG\VCLE.LIB|datetime
[ILINK32 Error] Error: Unresolved external '__fastcall System::Sysutils::StrToDate(const System::UnicodeString)' referenced from C:\PROGRAM FILES (X86)\EMBARCADERO\RAD STUDIO\9.0\LIB\WIN32\DEBUG\VCLE.LIB|datetime
[ILINK32 Error] Error: Unresolved external '__fastcall System::Syncobjs::TInterlocked::Increment(int&)' referenced from C:\PROGRAM FILES (X86)\EMBARCADERO\RAD STUDIO\9.0\LIB\WIN32\DEBUG\VCLE.LIB|ustring
[ILINK32 Error] Error: Unresolved external '__fastcall System::Sysutils::StrToTime(const System::UnicodeString)' referenced from C:\PROGRAM FILES (X86)\EMBARCADERO\RAD STUDIO\9.0\LIB\WIN32\DEBUG\VCLE.LIB|datetime
[ILINK32 Error] Error: Unable to perform link

这是我的主要代码:

int _tmain(int argc, _TCHAR* argv[])
{

//TDateTime Mine("12/05/1990",TDateTime::TDateTimeFlag::Date);

TDateTime Mine("12/05/1990");

getch();
return 0;
}

我已经包含了'vcl.h'

我该怎么做才能让它发挥作用？

Answer 1

我现在不使用 Borland/Embarcadero 工具，但我猜你忘了链接到 vcle.lib，正如链接器报告的那样。

TDateTime 构造函数似乎使用了在 vcle.lib 中实现的 Sysutils::StrToDateTime()。

将 vcle.lib 添加到链接器设置，并查看它是否构建。可以在 Project Options > Linker

中修改链接器设置