VB代码生成标准dll

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在很久很久以前,曾经有一种语言,对于很多人来说是very beautiful,而对于很多人来说是very basic,它就是传说中的vb。现在虽然各类语言风起云涌,但是曾经这个语言也是流行一时。

在很多年前,因为做autoit页面自动化,但是autoit没有很多方面的函数,考虑是否需要做标准dll,如果用vc,怕将来就维护代码是个问题,必须选用更简单的技术,于是用vb,会vb的人比较多。但是vb的ocx dll是COM组件,而非windows标准的dll,故此要寻找方法做出标准的dll,这样就可以提供给各种语言进行调用了。

闲话少叙,开始:

先去下面down下zip包:

http://www.planet-source-code.com/vb/scripts/ShowCode.asp?txtCodeId=54190&lngWId=1

安装步骤:

0) 解包zip,记录下解包目录;

1) 打开 .\linker\Linker.vbp,编译成MakeDLL.exe,拷贝到vb安装目录(例如:d:\ProgramFiles\Microsoft Visual Studio\VB98)

2) 打开.\addin\MakeDLLAddin.vbp,编译出MakeDLL.dll,MakeDLL.exp,MakeDLL.lib三个文件

3) 拷贝MakeDLL.DLL到vb安装目录,重启vb

4) 拷贝.\dll project\目录到项目模板目录(例如:D:\ProgramFiles\Microsoft Visual Studio\VB98\template\projects)

使用方法

1) 将项目模板目录下的.\dllproject\拷贝出来,直接进行函数或者过程的修改添加

试验方法

1) 先打开目录.\test dll\下的项目,编译成testdll.dll;

2) 再打开目录.\test program\下的项目,打开调用testdll.dll执行。

看看例子是啥样子的:

test dll\modTestDLL.bas:

Attribute VB_Name = "Module1"

''''''''''''''''''''''''''''''''''''''''''''''''

'' DLL PROJECT ?004 DanSoft Australia ''

'' Your dlls MUST HAVE a DLLMain and Main ''

'' proc,otherwise it won't compile properly! ''

''''''''''''''''''''''''''''''''''''''''''''''''

Function DLLMain(ByVal A As Long,ByVal B As Long,ByVal c As Long) As Long

DLLMain = 1

End Function

Sub Main()

'This is a dummy,so the IDE doesn't complain

'there is no Sub Main.

End Sub

Function addition(ByVal A As Double,ByVal B As Double) As Double

addition = A + B

End Function

Function subtraction(ByVal A As Double,ByVal B As Double) As Double

subtraction = A - B

End Function

test dll\TestDLL.def:

LIBRARY TestDLL

EXPORTS

addition

subtraction

用vb直接写个调用的例子:

test program\frmTest.frm

Private Declare Function subtraction Lib "testDLL.DLL" (ByVal A As Double,ByVal B As Double) As Double

Private Declare Function addition Lib "testDLL.DLL" (ByVal A As Double,ByVal B As Double) As Double

Private Sub cmdExit_Click()

End

End Sub

Private Sub Form_Load()

lblResult(0) = "9.87 + 2.99 = " & CStr(addition(9.87,2.99))

lblResult(1) = "10 - 8.43 = " & CStr(subtraction(10,8.43))

lblResult(2) = "9999 + 1543 = " & CStr(addition(9999,1543))

End Sub

来看看最后结果:

001.Jpg

好了,怀旧贴大功告成,现在你的VB可以跨越语言,实现互联互通了。

相关下载:

http://download.csdn.net/detail/testingba/5047346

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