条形码打印若干问题期待解决。
用微软的条形码控件做条形码源,因为报表程序都已经写好了,用的是GDI技术,但是微软条形码控件不支持.PICTURE这个属性,请问如何能够把微软条形码控件用GDI打印出来呢?如果实在不行,我现在考虑用PICTUREBOX中ADD微软条形码,这个已经实现了,但是PICTUREBOX.IMAGE属性是NOTHING的,如果想通过PICTUREBOX打印的话,怎么处理呢?
这里还是希望直接用GDI来打印条形码控件,实在不行了才考虑第二种方法.请这里的各位高人帮帮忙忙,先谢谢了! --------------------编程问答-------------------- 急,自己顶一下. --------------------编程问答-------------------- 网上也有支持打印的条形码控件，不妨搜索一下找找看吧。
帮顶！ --------------------编程问答-------------------- 牛人啊，顶 --------------------编程问答-------------------- 我上传的资源里面有个科本条形码控件，我现在也在做一个这方面的软件，你看看这个控件是否合适，网上条码设计软件太贵了，想做个免费开源的，这个条码控件是免费的，功能不错 --------------------编程问答-------------------- 哦,免费的控件吗?请提供一下下载地址,谢谢,另外,这个控件具体如何在VB.NET中用呢? 烦请指教,谢谢 --------------------编程问答-------------------- 我下载了ASPOSE BARCODE 如何用呢? 望指点,谢 --------------------编程问答-------------------- 如果你要使用微软的条码控件进行打印的话，那你得先抓图然后再打印，给你段代码自己看吧。
Private Declare Function BitBlt Lib "gdi32.dll" Alias "BitBlt" (ByVal _
hdcDest As IntPtr, ByVal nXDest As Integer, ByVal nYDest As _
Integer, ByVal nWidth As Integer, ByVal nHeight As Integer, ByVal _
hdcSrc As IntPtr, ByVal nXSrc As Integer, ByVal nYSrc As Integer, _
ByVal dwRop As System.Int32) As Long
Dim memoryImage As Bitmap
CaptureScreen()
objPreview.ShowDialog()
End Sub
Private Sub CaptureScreen()
Dim mygraphics As Graphics = Me.CreateGraphics()
Dim s As Size = Me.Size
memoryImage = New Bitmap(code.Width, code.Height, mygraphics)
Dim memoryGraphics As Graphics = Graphics.FromImage(memoryImage)
Dim dc1 As IntPtr = mygraphics.GetHdc
Dim dc2 As IntPtr = memoryGraphics.GetHdc
BitBlt(dc2, 0, 0, code.Width, _
code.Height, dc1, code.Location.X, code.Location.Y, 13369376)
mygraphics.ReleaseHdc(dc1)
memoryGraphics.ReleaseHdc(dc2)
End Sub
Private Sub objPrintDocument_PrintPage(ByVal sender As System.Object, ByVal e As PrintPageEventArgs)
Dim sngYPosition As Single
Dim sngXPosition As Single
Dim sngLeftMargin As Single = e.MarginBounds.Left
Dim sngTopMargin As Single = e.MarginBounds.Top
Dim strLine As String = Nothing
Dim objControl As Control
For Each objControl In Me.Controls
If TypeOf objControl Is Label Then
strLine = objControl.Text
sngXPosition = sngLeftMargin + objControl.Location.X
sngYPosition = sngTopMargin + objControl.Location.Y
Dim format As New StringFormat
format.Alignment = StringAlignment.Center
e.Graphics.DrawString(strLine, objControl.Font, Brushes.Red, objControl.Location.X, objControl.Location.Y)
e.Graphics.DrawImage(memoryImage, code.Location.X, code.Location.Y)
End If
Next
'memoryImage.Save("c:\1.bmp")
'e.Graphics.DrawRectangle(Pens.Black, sngLeftMargin, sngTopMargin, Me.Width, Me.Height - 100)
e.HasMorePages = False
End Sub
End Sub
--------------------编程问答-------------------- up --------------------编程问答-------------------- Mark. UP
--------------------编程问答-------------------- 我曾经写过一个39码（还是93码，搞不清了）的打印程序，效果还不错，我是自己一条线一条线画在纸上的，你觉得需要么，需要的话我把程序找出来，邮给你 --------------------编程问答-------------------- 给我啊！
E-MAIL：yuanxiong1863@163.com
补充：.NET技术 , VB.NET
