使用通用对话框控件当然可以打开打印对话框, 不过要浪费更多的资源和增加了一个 OCX 部件。 而用 API 会高效。
声明:
Declare Function PRINTDLG Lib "comdlg32.dll" Alias _
"PrintDlgA" (pPrintdlg As PRINTDLG) As Long
Type PRINTDLG
lStructSize As Long
hwndOwner As Long
hDevMode As Long
hDevNames As Long
hdc As Long
flags As Long
nFromPage As Integer
nToPage As Integer
nMinPage As Integer
nMaxPage As Integer
nCopies As Integer
hInstance As Long
lCustData As Long
lpfnPrintHook As Long
lpfnSetupHook As Long
lpPrintTemplateName As String
lpSetupTemplateName As String
hPrintTemplate As Long
hSetupTemplate As Long
End Type
使用:
Private Sub Command1_Click()
Dim p As PRINTDLG
p.lStructSize = Len(p)
p.hwndOwner = Me.hWnd
p.nFromPage = 1
p.nToPage = 1
p.nMinPage = 1
p.nMaxPage = 1
p.nCopies = 1
x = PRINTDLG(p)
Printer.Print Text1.Text
End Sub
在打印字符串时自动换行
感谢 shijia 的代码测试。
其中 len1 为打印的宽度, Str 为打印的文本。
Do While Len(Str) > 0
str1 = Str
Do While len1 > 0 And Printer.TextWidth(str1) > len1
str1 = Left(str1, Len(str1) - 1)
Loop
Printer.Print str1 '打印
If Len(str1) = 0 Then Exit Do '不匹配
Str = Mid(Str, Len(Str1)+1) '截断!
Loop
让打印机只打印一行
在 Win95 下,只有在使用 EndDoc 或 NewPage 时,打印机才开始打印,而且每次都要换页。使用以下的方法,可以只打印一行,并且可以把打印机的控制字符也直接发到打印机。
注意:如果打印机无汉字库,不能输出中文。
Open "PRN" For Output As #1
Print #1, "一行"
'Example Name:Printer Properties
Private Declare Function OpenPrinter Lib "winspool.drv" Alias "OpenPrinterA" (ByVal pPrinterName As String, phPrinter As Long, pDefault As Any) As Long
Private Declare Function ClosePrinter Lib "winspool.drv" (ByVal hPrinter As Long) As Long
Private Declare Function PrinterProperties Lib "winspool.drv" (ByVal hwnd As Long, ByVal hPrinter As Long) As Long
Private Sub Form_Load()
'KPD-Team 2001
'URL: http://www.allapi.net/
'E-Mail: KPDTeam@Allapi.net
Dim hPrinter As Long
OpenPrinter Printer.DeviceName, hPrinter, ByVal 0&
PrinterProperties Me.hwnd, hPrinter
ClosePrinter hPrinter
End Sub