?? getenvironmentvariable.htm
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<td width="100%" height="16">GetEnvironmentVariable</td>
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<td width="102%" colspan="2">VB聲明</td>
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<td width="102%" colspan="2">Declare Function GetEnvironmentVariable Lib
"kernel32" Alias "GetEnvironmentVariableA" (ByVal lpName As String,
ByVal lpBuffer As String, ByVal nSize As Long) As Long</td>
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<td width="102%" colspan="2">說明</td>
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<td width="102%" colspan="2">取得一個環境變量的值</td>
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<td width="102%" colspan="2">返回值</td>
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<td width="102%" colspan="2">Long，載入的環境變量的長度。如指定的環境字串不存在，就返回零。如lpBuffer的長度不足以全部容下字串，則返回字串的全長。隨后可用這個長度分配一個足夠大的緩沖區</td>
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<td width="102%" colspan="2">參數表</td>
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<td width="25%">參數</td>
<td width="77%">類型及說明</td>
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<td width="25%">lpName</td>
<td width="77%">String，欲讀入的環境字串的名稱</td>
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<td width="25%">lpBuffer</td>
<td width="77%">String，隨同字串裝載的一個緩沖區。注意預先將其初始化到合適的長度</td>
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<td width="25%">nSize</td>
<td width="77%">Long，lpBuffer的長度</td>
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