delphi-2009

We tried ServerCharSet=utf8 and ServerCharSet=UTF8 , based on information found in newsgroups - but still, special characters / Umlauts do not appear correctly in the client data. We use Delphi 2009 and the built-in dbExpress driver. Field data is retrieved using AsWideString. you have to set up a client charset. Simple " SET NAMES utf8 " query, executed right after connect, will do the trick 来源： https://stackoverflow.com/questions/3598593/which-dbexpress-servercharset-do-i-need-for-utf8-data-in-mysql-5

For example, is there a way to find out that this class has a virtual constructor (at runtime)? TMyClass = class(TObject) MyStrings: TStrings; constructor Create; virtual; end; For example, in this code I would like to test if the class referenced by Clazz has a virtual constructor: procedure Test; var Clazz: TClass; Instance: TObject; begin Clazz := TMyClass; Instance := Clazz.Create; end; Is there a simple solution, for example using RTTI, which works in Delphi 6 to 2009? Mason Wheeler Looking through the TypInfo unit, it doesn't look like there's any way to tell if a method is virtual using

I do not know how to use any API that is not in the RTL. I have been using SetFilePointer and GetFileSize to read a Physical Disk into a buffer and dump it to a file, something like this in a loop does the job for flash memory cards under 2GB: SetFilePointer(PD,0,nil,FILE_BEGIN); SetLength(Buffer,512); ReadFile(PD,Buffer[0],512,BytesReturned,nil); However GetFileSize has a limit at 2GB and so does SetFilePointer. I have absolutley no idea how to delcare an external API, I have looked at the RTL and googled for many examples and have found no correct answer. I tried this function GetFileSizeEx