В Headers.pas ничего нет. Можно ли это перевести так:BOOL WINAPI _export IsArchive(const char *Name,const unsigned char *Data,int DataSize);
BOOL WINAPI _export OpenArchive(const char *Name,int *TypeArc);
int WINAPI _export GetArcItem(struct PluginPanelItem *Item,struct ArcItemInfo *Info);
BOOL WINAPI _export CloseArchive(struct ArcInfo *Info);
BOOL WINAPI _export GetFormatName(int TypeArc,char *FormatName,char *DefaultExt);
BOOL WINAPI _export GetDefaultCommands(int TypeArc,int Command,char *Dest);
Function IsArchive(Name, Data: PChar; DataSize: Integer): Bool; Export;
Function OpenArchive(const Name: PChar; TipeArc: Integer): Bool; Export;
Function GetArcItem(PluginPanelItem: TPluginPanelItem;
ArcItemInfo: TArcItemInfo): Integer; Export;
Function CloseArchive(ArcInfo: TArcInfo): Bool; Export;
Function GetFormatName(Tipe: Integer; FormatName, DefaultExt: PChar): Bool; Export;
Function GetDefaultCommands(TipeArc, Command: Integer; Dest: PChar): Bool; Export;
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Ы?