适用于VB6.0的通用对话框自定义模块，不使用控件，对Windows通用对话框进行自定义，核心包括一个封装的类和两个模块。CCommonDialog.cls功能：使用 Windows 通用对话框，实现了调用文件属性对话框、打开对话框（可以提供某些文件预览）、保存对话框的功能；MDrawWaves.bas给定一个Wave文件，画出其波形；MCDHook.bas对话框预览核心模块，实现回调函数，消息截取处理和其他功能。它里面的变量、函数等，一般不需要在外部调用，所有功能基本封装在 CCommonDialog 类中；frmMain.frm程序主窗体，演示 CCommonDialog 类的各种属性和方法-Suitable for VB6.0 common dialog custom module, do not use the controls on the Windows common dialog box to customize, including a package of core classes and two modules. CCommonDialog.cls Function: Use Windows common dialog to achieve the calling file Properties dialog box, the Open dialog box (can provide some file preview), save function of the dialog box　MDrawWaves.bas given a Wave file, draw the waveform　 MCDHook.bas preview dialog core module to implement callbacks, message interception processing and other functions. It is inside the variables, functions, etc., generally do not need to call in outside, all the basic functions encapsulated in CCommonDialog class　frmMain.frm program s main window, demonstrating various properties and methods CCommonDialog class