经常用Borland C++ Builder5编程,操作数据库时,报表打印是必不可少的。但BCB5自身所带的报表控件又显得缺少灵活性。所以,我想到了用TPrinter来打印报表。使用TPrinter必须要在程序头部加入#include <vcl//Printers.hpp>
由于对于不是链页打印纸来说,断页很困难,所以,我所需要设定每页打印的记录数。下面就是我自己编制的一个每页打印30条符合条件记录的代码,写给大家,以供参考。
try{
//定位打印头
int x,y;
x=170;
y=150;
Printer()->BeginDoc();//开始一个打印工作
//打印标头
Printer()->Canvas->Font->Size=24;
Printer()->Canvas->Font->Name=/"黑体/";
Printer()->Canvas->TextOut(x,y,/" -----服装请领记录-----/");
Printer()->Canvas->Font->Size=10;
Printer()->Canvas->Font->Name=/"宋体/";
x=190;
y=y+300;
//打印表格标题行
Printer()->Canvas->TextOut(x,y,/" ◇/"+Trim(Label12->Caption));
y=y+80;
Printer()->Canvas->TextOut(x,y,/"┏━━━━━━━━━┳━━━━━━━━━━┳━━┳━━━━━┳━━━━━━━━━━━┳━━━━━━━┓/");
y=y+80;
Printer()->Canvas->TextOut(x,y,/" 日 期 品 名 姓 名 部 门 职 务/");
Printer()->Canvas->TextOut(x+1820,y,/"数量/");
Printer()->Canvas->TextOut(x,y,/"┃/");
Printer()->Canvas->TextOut(x+830,y,/"┃/");
Printer()->Canvas->TextOut(x+1742.1,y,/"┃/");
Printer()->Canvas->TextOut(x+1991.2,y,/"┃/");
Printer()->Canvas->TextOut(x+2491.73,y,/"┃/");
Printer()->Canvas->TextOut(x+3487.61,y,/"┃/");
Printer()->Canvas->TextOut(x+4151,y,/"┃/");
ADOQuery1->First();
//换页记录计数器初始化
int i=0;
//建立循环,如果不是最后一条记录则进行循环
while(!ADOQuery1->Eof)
{
//计数器加1
i=i+1;
y=y+80;
//打印第一条记录
Printer()->Canvas->TextOut(x,y,/"┣━━━━━━━━━╋━━━━━━━━━━╋━━╋━━━━━╋━━━━━━━━━━━╋━━━━━━━┫/");
y=y+80;
Printer()->Canvas->TextOut(x,y,/"┃/"+ADOQuery1->FieldByName(/"请领日期/")->AsString);
Printer()->Canvas->TextOut(x+830,y,/"┃/"+ADOQuery1->FieldByName(/"品名/")->AsString);
Printer()->Canvas->TextOut(x+1742.1,y,/"┃/"+ADOQuery1->FieldByName(/"数量/")->AsString);
Printer()->Canvas->TextOut(x+1991.2,y,/"┃/"+ADOQuery1->FieldByName(/"请领人/")->AsString);
Printer()->Canvas->TextOut(x+2491.73,y,/"┃/"+ADOQuery1->FieldByName(/"部门/")->AsString);
Printer()->Canvas->TextOut(x+3487.61,y,/"┃/"+ADOQuery1->FieldByName(/"职务/")->AsString);
Printer()->Canvas->TextOut(x+4151,y,/"┃/");
ADOQuery1->Next();
//测试是否该换页,每30条记录换一次页
if(i%30==0)
{
//如果已经是最后一条记录,则退出循环