Hi I've already triied to include windows.h but it doesn't work. Here is some
example code which also doesn't work: File main.cpp #include <vcl.h> #include <windows.h> #pragma hdrstop #include "main.h" #include <sqlplus.hh> //--------------------------------------------------------------------------- #pragma package(smart_init) #pragma resource "*.dfm" TForm1 *Form1; //--------------------------------------------------------------------------- __fastcall TForm1::TForm1(TComponent* Owner) : TForm(Owner) { } //---------------------------------------------------------------------------

void __fastcall TForm1::Button1Click(TObject *Sender) { MYSQL *sqlstruct;

sqlstruct = mysql_connect(meinsql,"localhost","root",""); }

And here is the Option file which shows that I include libmysql.lib

<?xml version='1.0' encoding='us-ascii' ?> <!-- C++Builder XML Project --> <PROJECT> <MACROS> <VERSION value="BCB.05.03"/> <PROJECT value="test.exe"/> <OBJFILES value="test.obj main.obj"/> <RESFILES value="test.res"/> <DEFFILE value=""/> <RESDEPEN value="$(RESFILES) main.dfm"/> <LIBFILES value="libmysql.lib"/> <LIBRARIES value=""/> <SPARELIBS value="VCL50.lib"/> <PACKAGES value="VCL50.bpi VCLX50.bpi bcbsmp50.bpi dclocx50.bpi
bcb2kaxserver50.bpi"/> <PATHCPP value=".;"/> <PATHPAS value=".;"/> <PATHRC value=".;"/> <PATHASM value=".;"/> <DEBUGLIBPATH value="$(BCB)\lib\debug"/> <RELEASELIBPATH value="$(BCB)\lib\release"/> <LINKER value="tlink32"/> <USERDEFINES value="_DEBUG"/> <SYSDEFINES value="_RTLDLL;NO_STRICT;USEPACKAGES"/> <MAINSOURCE value="test.cpp"/> <INCLUDEPATH
value="$(BCB)\include;$(BCB)\include\vcl;C:\mysql\mysql++1_7_1win32_borland_1_1\include\mysql\;&quot;C:\mysql\mysql++1_7_1win32_borland_1_1\include\sqlplus\&quot;"/> <LIBPATH value="$(BCB)\lib\obj;$(BCB)\lib"/> <WARNINGS value="-w-par"/> </MACROS> <OPTIONS> <CFLAG1 value="-Od -H=$(BCB)\lib\vcl50.csm -Hc -Vx -Ve -X- -r- -a8 -b- -k -y
-v -vi- -c -tW -tWM"/> <PFLAGS value="-$YD -$W -$O- -v -JPHNE -M"/> <RFLAGS value=""/> <AFLAGS value="/mx /w2 /zd"/> <LFLAGS value="-D&quot;&quot; -aa -Tpe -x -Gn -v"/> </OPTIONS> <LINKER> <ALLOBJ value="c0w32.obj $(PACKAGES) Memmgr.Lib sysinit.obj $(OBJFILES)"/> <ALLRES value="$(RESFILES)"/> <ALLLIB value="$(LIBFILES) $(LIBRARIES) import32.lib cp32mti.lib"/> </LINKER> <IDEOPTIONS> [Version Info] IncludeVerInfo=0 AutoIncBuild=0 MajorVer=1 MinorVer=0 Release=0 Build=0 Debug=0 PreRelease=0 Special=0 Private=0 DLL=0 Locale=1031 CodePage=1252

[Version Info Keys] CompanyName= FileDescription= FileVersion=1.0.0.0 InternalName= LegalCopyright= LegalTrademarks= OriginalFilename= ProductName= ProductVersion=1.0.0.0 Comments=

[HistoryLists\hlIncludePath] Count=4 Item0=$(BCB)\include;$(BCB)\include\vcl;C:\mysql\mysql++1_7_1win32_borland_1_1\include\mysql\;C:\mysql\mysql++1_7_1win32_borland_1_1\include\sqlplus Item1=$(BCB)\include;$(BCB)\include\vcl;C:\mysql\mysql++1_7_1win32_borland_1_1\include\mysql\ Item2=$(BCB)\include;$(BCB)\include\vcl;C:\mysql\mysql++1_7_1win32_borland_1_1\include\mysql Item3=$(BCB)\include;$(BCB)\include\vcl

[HistoryLists\hlLibraryPath] Count=1 Item0=$(BCB)\lib\obj;$(BCB)\lib

[HistoryLists\hlDebugSourcePath] Count=1 Item0=$(BCB)\source\vcl

[HistoryLists\hlConditionals] Count=1 Item0=_DEBUG

[Debugging] DebugSourceDirs=$(BCB)\source\vcl

[Parameters] RunParams= HostApplication= RemoteHost= RemotePath= RemoteDebug=0

[Compiler] ShowInfoMsgs=0 LinkDebugVcl=0 </IDEOPTIONS> </PROJECT>

So can anyone tell me what went wrong ??????

Thanx for every idea