如何在 VB 6 中获取当前的 CPU 和 RAM 使用情况? [英] How to get current CPU and RAM usage in VB 6?
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问题描述
如何在 VB 6 代码中获取 CPU 和内存使用情况?谢谢!
how to get the CPU and memory usage in VB 6 code? Thanks!
推荐答案
确定当前机器上的 CPU 使用率
Determine the CPU Usage on the Current Machine
声明
Option Explicit
' Note that if you declare the lpData parameter as String, you
' must pass it By Value.
Private Declare Function RegQueryValueEx Lib "advapi32.dll" _
Alias "RegQueryValueExA" (ByVal hKey As Long, ByVal lpValueName _
As String, ByVal lpReserved As Long, lpType As Long, lpData As _
Any, lpcbData As Long) As Long
Private Declare Function RegOpenKeyEx Lib "advapi32.dll" Alias _
"RegOpenKeyExA" (ByVal hKey As Long, ByVal lpSubKey As String, _
ByVal ulOptions As Long, ByVal samDesired As Long, _
phkResult As Long) As Long
Private Declare Function RegCloseKey Lib "advapi32.dll" _
(ByVal hKey As Long) As Long
Private Const KEY_QUERY_VALUE = &H1
Private Const HKEY_DYN_DATA As Long = &H80000006
Private Const STAT_DATA = "PerfStatsStatData"
Private Const CPU_USE = "KERNELCPUUsage"
代码
Public Function CPU_Usage_Percent() As Long
On Error GoTo errorhandler:
Dim lResult As Long
Dim lData As Long
Dim lType As Long
Dim hKey As Long
lResult = RegOpenKeyEx(HKEY_DYN_DATA, STAT_DATA, _
0, KEY_QUERY_VALUE, hKey)
If lResult = 0 Then
lResult = RegQueryValueEx(hKey, CPU_USE, 0, _
lType, lData, 4)
If lResult = 0 Then
CPU_Usage_Percent = lData
lResult = RegCloseKey(hKey)
End If
End If
Exit Function
errorhandler:
On Error Resume Next
RegCloseKey hKey
Exit Function
End Function
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