婴儿多大剃头比较好:如何解决VB中的Grid控件的打印问题

12、如何解决VB中的Grid控件的打印问题
---- Grid 控件是Visual Basic最常见控件之一， 从VB3.0 到VB5.0 都有该控件。 也是VB爱好者最喜爱的工具之一。
用它可以以表格的形式 显示、浏览数据，特别是数据库应用，直接绑定即可显示浏览数据库信息。然而，美中不足的是Grid 
没有编辑和打印功能，列与列的位置不能相互交换。笔者曾尝试着给Grid 增添了这些功能，使之锦上添花，功能更强大。
下面给出改进方法及源程序，读者只需按步骤写下源程序即可使你的Grid 具有打印功能。
该程序笔者在HP5/100Window95环境下用VB5.0 调试通过。
---- 给Grid 控件增加打印方法有三种：
1 是直接打印控件的方法，
2 是通过 printer 来实现打印功能，
3 是通过调用MS-WORD 及MS-EXCEl 来 实 现 打 印。
---- 首先，打开一个应用，在FORM1中增加DATA 控件DATA1,把DATA1的CONNECT 属性设为dBASE III，再把
DATABASENAME属性设为D:\PJXM.DBF。然后再在FORM1中增加MSFLEXGRID空间GRID1，并把GRID1的DATASOURCE 属性
设为DATA1。这样数据库PJXM.DBF 的信息就会在GRID1中显示出来。
---- 方法一：直接打印窗体法，在FORM1中增加命令按钮(command)，CAPTION属性设为直接打印，再写入下列编码：
Sub command_click
Form1.printform
End sub
---- 这样即可通过打印窗体FORM1的方法把GRID1的数据打印出来，遗憾的是只能打印GRID1中显示的数据部分，显示不出来的
则无法打印， 而且这种打印方法很象屏幕硬拷贝把其他控件也打印出来。也不能灵活的控制字体等。
---- 方法二：通过PRINTER实现打印。这种方法
---- 1、加入打印命令按钮(command1)、函数(print1)即可实现打印功能，写入下面代码，读者稍加改动可写成标准的函数
或过程。
Function prnt1 (x As Integer, y As Integer,
font As Single, txt As String)
printer.CurrentX = x
printer.CurrentY = y
printer.FontBold = False
printer.FontSize = font
printer.Print txt
End Function
Sub command1_click
Dim fnt As Single
Dim pp as integer
Pp=0‘设置开始页码0
Dim stry,strx,strx1,stry1,linw,page1,p As Integer
Static a(8) As Integer‘定义打印的列数
ss$ = "内部结算存入款对帐单"‘定义表头
kan = 0
For i = 0 To 8
a(i) = 1500‘定义每列宽
kan = kan + a(i)‘计算表格总宽度
Next
page1 = 50‘定义每页行数
strx = 200
strx1 = 200‘定义X方向起始位置
stry = 1400
stry1 = 1400‘定义Y方向起始位置
linw = 240‘定义行宽
fnt = 8‘定义字体大小
printer.fontname = "宋体"‘定义字体
dd = prnt1(4000, 700, 18, ss$)‘打印标题
printer.Line (strx - 50, stry - 30)
-(strx + kan - 10, stry - 30)
For j = 0 To gridrow - 1‘gridrow为所要打印的行数
grid1.row = j
strx = strx1
printer.Line (strx - 50, stry - 30)
-(strx + kan - 10, stry - 30)
p = p + 1
For i = 0 To 8
grid1.col = i
dd = prnt1(strx, stry, fnt, grid1.text)
strx = strx + a(i)
Next
If p > page1 Then‘next page
p = 0
strx = strx1
‘line last line
printer.Line (strx - 50, stry + linw)
-(strx + kan - 10, stry + linw)
stry = stry1
‘line col
For n = 0 To 8
printer.Line (strx - 30, stry - 30)
-(strx - 30, stry + (page1 + 2) * linw)
strx = strx + a(n)
Next
printer.Line (strx - 30, stry - 30)
-(strx - 30, stry + (page1 + 2) * linw)
pp=pp+1
foot$="第 "+cstr(pp)+"页"
dd = prnt1(strx - 30-1000, stry + (page1 + 2)
* linw+100, 10, foot$)‘打印页角码
printer.NewPage‘next page
dd = prnt1(4000, 700, 18, ss$) ‘打印标题
strx = strx1
stry = stry1
printer.Line (strx - 50, stry - 30)-
(strx + kan - 10, stry - 30)‘ print first row
Else
stry = stry + linw
End If
Next
st = stry
If p < page1 Then ‘在最后页剩余划空行
For o = p To page1 + 1
strx = strx1
printer.Line (strx - 50, stry - 30)
-(strx + kan - 10, stry - 30)
stry = stry + linw
Next
End If
stry = stry1
strx = strx1
stry = stry1 ‘line col
For n = 0 To 8
printer.Line (strx - 30, stry - 30)-
(strx - 30, stry + (page1 + 2) * linw)
strx = strx + a(n)
Next
printer.Line (strx - 30, stry - 30)-
(strx - 30, stry + (page1 + 2) * linw)
pp=pp+1
foot$="第 "+cstr(pp)+"页"
dd = prnt1(strx - 30-1000, stry + (page1 + 2)
* linw+100, 10, foot$)‘打印页角码
printer.EndDoc‘打印结束
Endsub
---- 这种方法通过灵活的编程可以方便地调整字体、字型、线形、页面、纸张大小等。可打印出比较满意的效果。如果你的
计算机上装有MICROSOFT WORD 和MICRO EXCEL，最精彩的用法还是把GRID 的表格通过VB发送到MICROSOFT WORD 及
MICRO EXCEL。生成MICROSOFT WORD 和MICRO EXCEL 表格。这样就可以充分利用MICROSOFT WORD 和MICRO EXCEL的
打印、编辑功能打印出更理想的效果。下面逐一介绍。
---- 方法三：通过生成MICROSOFT WORD表格打印
---- 1、在declaration 中写入: Dim msword As Object
---- 2、 加入打印命令按钮(command2)，CAPTION 设为"生成WORD 表格"，写入下面代码，
Private Sub command2_Click()
screen.MousePointer = 11
Set msword = CreateObject("word.basic")
Dim AppID, ReturnValue
appID = Shell("d:\office97\office\WINWORD.EXE", 1)
‘ Run Microsoft Word.
msword.AppActivate "Microsoft Word"
‘msword.AppActivate "Microsoft Word", 1
full
Screen.MousePointer = 0
End Sub
---- 2、写入以下过程full()
Sub full()
Dim i As Integer, j As Integer,
col As Integer, row As Integer
Dim cellcontent As String
Me.Hide
cols = 4‘表格的列数
row = gridrow‘打印表的行数
msword.filenewdefault
msword.MsgBox "正在建立MS_WORD报表，
请稍候.......", "", -1
msword.leftpara
msword.screenupdating 0
msword.tableinserttable , col, row, , , 16, 167
msword.startofdocument
for j=0 to gridrow‘ 表格的行数
grid1.row=j
For i = 1 To cols
Gri1d.col=i
If IsNull(grid1.text) Then
cellcontent$ = ""
Else
cellcontent$ = grid1.text
End If
msword.Insert cellcontent$
msword.nextcell
Next i
Next j
msword.tabledeleterow
msword.startofdocument
msword.tableselectrow
msword.tableheadings 1
msword.centerpara
‘msword.startdocument
msword.screenrefresh
msword.screenupdating 1
msword.MsgBox " 结束", "", -1
Me.Show
End Sub
---- 方法四：通过发送到MICROSOFT EXCEL实现表格打印
---- 1、加入打印命令按钮(command3)，CAPTION 设为"生成EXCEL 表格"，写入下面代码
Private Sub command3_Click()
Dim i As Integer
Dim j As Integer
Dim xlApp As Excel.Application
Dim xlBook As Excel.Workbook
Dim xlSheet As Excel.Worksheet
Set xlApp = CreateObject("Excel.Application")
xlApp.Visible = True
‘Set xlBook = xlApp.Workbooks.Add
‘On Error Resume Next
Set xlBook = xlApp.Workbooks.Add ‘Open("d:\text2.xls")
Set xlSheet = xlBook.Worksheets(1)
xlSheet.Cells(6, 1) = "i"
For i = 0 To gridrow
grid1.Row = i
For j = 0 To 6
Grid1.Col = j
If IsNull(Grid1.Text) = False Then
xlSheet.Cells(i + 5, j + 1) = Grid1.Text
End If
Next j
Next i
Exit Sub