各位大大好~ 請教一個問題 以下的程式我是用來輸出印表機的 己經現場在運作了,不過一天差不多會出現幾次的錯訊息 訊息如下:Capability not supported 我的timer是設30秒跑一次,不過有時候就算沒資料也會出現. 出現後,它顯示錯誤訊息之後,重新跑,一切也都正常....請問這有解決的方式嗎 void __fastcall TFormPrintQueueMain::Timer1Timer(TObject *Sender) { ADOPrnque->Close(); ADOPrnque->SQL->Clear(); ADOPrnque->SQL->Add("Select workno ,printstate ,sno from prnque.DB"); ADOPrnque->SQL->Add("group by workno ,printstate ,sno"); ADOPrnque->SQL->Add("Order By workno"); ADOPrnque->Filtered = true; ADOPrnque->Open(); } if(ADOPrnque->RecordCount != 0) { ADOPrnque->First(); while(!ADOPrnque->Eof) { if(TablePrnque->FieldByName("PRINTSTATE1")->AsString == "含總單") { PrintDefault(); } TablePrnque->First(); while(!TablePrnque->Eof) ADOPrnque->Next(); } } ADOPrnque->Close(); TablePrnque->Close(); }