在运行中点击打印没有显示预览界面,错误日子提示:
Access violation at address 004B990C in module 'CP.exe'. Read of address 0000009D
请问是什么原因呀?
Access violation at address 004B990C in module 'CP.exe'. Read of address 0000009D
请问是什么原因呀?
MyPage: RvClass.TRavePage;
MyText: RVCsStd.TRaveText;
Query : TADOQuery;
begin
if Printer.Printers.Count<1 then
begin
Application.MessageBox('系统没有打印机,请添加打印机!','',MB_OK + MB_ICONEXCLAMATION );
exit;
end
else
begin
Screen.Cursor:=crHourGlass;
try
vSQL := 'Select * from tablename';
Query:=CreateQuery(vSQL);
Query.Open;
if not Query.Eof then
begin
RvDataSetConnection1.DataSet := Query;
RvProject1.ProjectFile := '..\rep\GInfo.rav';
RvProject1.Open;
With RvProject1.ProjMan do
begin
MyPage := FindRaveComponent('report2.Mainpage',nil) as TRavePage;
MyText := FindRaveComponent('Text10',MyPage) as TRaveText;
MyText.Text := LabeledEdit2.Text;
end;
RvProject1.ExecuteReport('report2');
RvProject1.Close;
end;
Query.Close;
Query.Free;
except
on E:Exception do g_WriteLog(RightMgr1,pchar(E.Message),'[打印]');
end;
Screen.Cursor:=crDefault;
end;end;