计算机打印机用户,如何：在 Windows 窗体中选择连接到用户计算机的打印机
使用 PrintDialog 组件选择要使用的打印机。
在下面的代码示例中，有两个要处理的事件。第一个事件是 Button 控件的 Click 事件，在该事件中，PrintDialog 类被实例化，并且用户选择的打印机在 DialogResult 属性中捕获。
第二个事件是 PrintDocument**** 组件的 PrintPage 事件，在该事件中，将一个示例文档打印到指定的打印机。
Private Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim PrintDialog1 As New PrintDialog()
PrintDialog1.Document = PrintDocument1
Dim result As DialogResult = PrintDialog1.ShowDialog()
If (result = DialogResult.OK) Then
PrintDocument1.Print()
End If
End Sub
Private Sub PrintDocument1_PrintPage(ByVal sender As Object, ByVal e As System.Drawing.Printing.PrintPageEventArgs) Handles PrintDocument1.PrintPage
e.Graphics.FillRectangle(Brushes.Red, New Rectangle(500, 500, 500, 500))
End Sub
private void button1_Click(object sender, System.EventArgs e)
{
PrintDialog printDialog1 = new PrintDialog();
printDialog1.Document = printDocument1;
DialogResult result = printDialog1.ShowDialog();
if (result == DialogResult.OK)
{
printDocument1.Print();
}
}
private void printDocument1_PrintPage(object sender,
System.Drawing.Printing.PrintPageEventArgs e)
{
e.Graphics.FillRectangle(Brushes.Red,
new Rectangle(500, 500, 500, 500));
}
private void button1_Click(Object sender, System.EventArgs e)
{
PrintDialog printDialog1 = new PrintDialog();
printDialog1.set_Document(printDocument1);
DialogResult result = printDialog1.ShowDialog();
if (result == DialogResult.OK)
{
printDocument1.Print();
}
}
private void printDocument1_PrintPage(Object sender,
System.Drawing.Printing.PrintPageEventArgs e)
{
e.get_Graphics().FillRectangle(Brushes.get_Red(),
new Rectangle(500, 500, 500, 500));
}
private:
void button1_Click(System::Object ^ sender,
System::EventArgs ^ e)
{
PrintDialog ^ printDialog1 = gcnew PrintDialog();
printDialog1->Document = printDocument1;
System::Windows::Forms::DialogResult result =
printDialog1->ShowDialog();
if (result == DialogResult::OK)
{
printDocument1->Print();
}
}
private:
void printDocument1_PrintPage(System::Object ^ sender,
System::Drawing::Printing::PrintPageEventArgs ^ e)
{
e->Graphics->FillRectangle(Brushes::Red,
Rectangle(500, 500, 500, 500));
}
((Visual C#、Visual J# 和 Visual C++)在窗体的构造函数中放入以下代码以注册事件处理程序。
this.printDocument1.PrintPage += new
System.Drawing.Printing.PrintPageEventHandler
(this.printDocument1_PrintPage);
this.button1.Click += new System.EventHandler(this.button1_Click);
this.printDocument1.add_PrintPage(new
System.Drawing.Printing.PrintPageEventHandler
(this.printDocument1_PrintPage));
this.button1.add_Click(new System.EventHandler(this.button1_Click));
this->printDocument1->PrintPage += gcnew
System::Drawing::Printing::PrintPageEventHandler
(this, &Form1::printDocument1_PrintPage);
this->button1->Click += gcnew
System::EventHandler(this, &Form1::button1_Click);
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