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I have written some code from a tutorial. Now I am stuck with the RenameFile() function from System.SysUtils.hpp The returnValue_ is always false or 0. I tried it as Administrator. I checked the file permissions security. Nothing worked. //--------------------------------------------------------------------------- #include <vcl.h> #pragma hdrstop #include "uTSearchRec.h" //--------------------------------------------------------------------------- #pragma package(smart_init) #pragma resource "*.dfm" TForm2* Form2; TSearchRec SearchRec; //--------------------------------------------------------------------------- __fastcall TForm2::TForm2(TComponent* Owner) : TForm(Owner) {} //--------------------------------------------------------------------------- void __fastcall TForm2::btnSearchClick(TObject* Sender) { String FindFirstPath_ = "C:\\Users\\NO_NO\\OneDrive\\TEMP\\*.*"; String Caption1_ = "Current Path:\n" + FindFirstPath_; String Caption2_ = SearchRec.Name + " is " + IntToStr(SearchRec.Size) + "bytes in size"; FindFirst(FindFirstPath_, faAnyFile, SearchRec); lbOutput->Caption = Caption1_ + "\n" + Caption2_; } //--------------------------------------------------------------------------- void __fastcall TForm2::btnAgainClick(TObject* Sender) { if (FindNext(SearchRec) == 0) { lbOutput->Caption = SearchRec.Name + " is " + IntToStr(SearchRec.Size) + " bytes in size"; } else FindClose(SearchRec); } //--------------------------------------------------------------------------- void __fastcall TForm2::btnRenameClick(TObject* Sender) { String const OldFileName_ = SearchRec.Name; String const NewFileName_ = OldFileName_ + "bak"; String const MessageFail_ = "Humpty Bumpty ! Njet Internjet !"; String const MessageOK_ = "The bether its not get !"; bool returnValue_ = true; try { returnValue_ = RenameFile(OldFileName_, NewFileName_); lbControlText->Caption = IntToStr(returnValue_); } catch (...){ lbOutput->Caption = "NewFileName_ : " + NewFileName_ + "\nOldFileName_ :" + OldFileName_ + "\nreturnValue : " + IntToStr(returnValue_); } lbOutput->Caption = MessageOK_; /* if ( (RenameFile(OldFileName_, NewFileName_) == false )) { lOutput->Caption = MessageFail_; } else lOutput->Caption = MessageOK_; */ } //--------------------------------------------------------------------------- Header //--------------------------------------------------------------------------- #ifndef uTSearchRecH #define uTSearchRecH //--------------------------------------------------------------------------- #include <System.Classes.hpp> #include <Vcl.Controls.hpp> #include <Vcl.StdCtrls.hpp> #include <Vcl.Forms.hpp> #include <System.SysUtils.hpp> //--------------------------------------------------------------------------- class TForm2 : public TForm { __published: // IDE-managed Components TLabel *lbOutput; TButton* btnSearch; TButton* btnAgain; TButton* btnRename; TLabel *lbControlText; void __fastcall btnSearchClick(TObject* Sender); void __fastcall btnAgainClick(TObject* Sender); void __fastcall btnRenameClick(TObject* Sender); private: // User declarations public: // User declarations __fastcall TForm2(TComponent* Owner); }; //--------------------------------------------------------------------------- extern PACKAGE TForm2* Form2; //--------------------------------------------------------------------------- #endif

I am using CBuilder 11.3 Professional. Is there any way I can make a mobile phone program to allow multiple phones to read a table on a server database. Is the only way to do this is to upgrade to Enterprise version. I have a VCL windows program that I have uploaded data to a MySQL database but I could use some other type of database. Bill