VB.net中实现打印窗体

最新推荐文章于 2025-07-28 16:46:46 发布

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最新推荐文章于 2025-07-28 16:46:46 发布 · 6.7k 阅读

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#vb.net #integer #function #structure #button #user

本文介绍了如何在VB.NET中实现窗体的打印功能，通过导入System.Drawing.Printing和使用GDI+的相关函数，捕获窗体图像并将其发送到打印机。内容包括定义BitBlt、GetWindowDC等函数，创建Bitmap对象，以及在Button点击事件中触发打印操作。

Imports System
Imports System.Drawing.Printing

Public Class Form1

    <System.Runtime.InteropServices.DllImport("gdi32.dll")> _
   Public Shared Function 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 Integer) As Boolean
    End Function
    <System.Runtime.InteropServices.DllImport("User32.dll")> _
    Public Shared Function GetWindowDC(ByVal hwd As IntPtr) As IntPtr
    End Function