|
|
|
|
|
|
|
|
Dicas
|
|
|
Visual Basic (Miscelâneas)
|
|
 |
Título da Dica: Vefiricar se está rodando um processo antes de executa-lo
|
 |
|
|
|
Postada em 28/7/2003 por MAC
'Neste exemplo o Programa escolhido foi o Calc.exe,
'mas poderia ser qualquer outro, ou se pode criar um
'loop para verificar os programas que vc quiser bloquear
'o acesso a mais de uma vez.
Const TH32CS_SNAPHEAPLIST = &H1
Const TH32CS_SNAPPROCESS = &H2
Const TH32CS_SNAPTHREAD = &H4
Const TH32CS_SNAPMODULE = &H8
Const TH32CS_SNAPALL = (TH32CS_SNAPHEAPLIST Or _
TH32CS_SNAPPROCESS Or TH32CS_SNAPTHREAD Or TH32CS_SNAPMODULE)
Const TH32CS_INHERIT = &H80000000
Const MAX_PATH As Integer = 260
Private Type PROCESSENTRY32
dwSize As Long
cntUsage As Long
th32ProcessID As Long
th32DefaultHeapID As Long
th32ModuleID As Long
cntThreads As Long
th32ParentProcessID As Long
pcPriClassBase As Long
dwFlags As Long
szExeFile As String * MAX_PATH
End Type
Private Declare Function CreateToolhelp32Snapshot Lib "Kernel32" _
(ByVal lFlags As Long, ByVal lProcessID As Long) As Long
Private Declare Function Process32First Lib "Kernel32" _
(ByVal hSnapShot As Long, uProcess As PROCESSENTRY32) As Long
Private Declare Function Process32Next Lib "Kernel32" _
(ByVal hSnapShot As Long, uProcess As PROCESSENTRY32) As Long
Private Declare Sub CloseHandle Lib "Kernel32" (ByVal hPass As Long)
Dim msgaviso As Integer
Private Sub cdmCalc_Click()
Dim hSnapShot As Long, uProcess As PROCESSENTRY32
Dim r, strCalc As String
Dim varCalc As Variant
hSnapShot = CreateToolhelp32Snapshot(TH32CS_SNAPALL, 0&)
uProcess.dwSize = Len(uProcess)
r = Process32First(hSnapShot, uProcess)
Do While r
strCalc = (Left$(uProcess.szExeFile, _
IIf(InStr(1, uProcess.szExeFile, Chr$(0)) > 0, _
InStr(1, uProcess.szExeFile, Chr$(0)) - 1, 0)))
If strCalc = "Calc.exe" Then
msgaviso = MsgBox("Calculadora já está ativa!", _
vbExclamation + vbOKOnly, "Resumo de Qualidade")
GoTo 10:
End If
r = Process32Next(hSnapShot, uProcess)
Loop
varCalc = Shell("Calc.exe", vbNormalFocus)
10: CloseHandle hSnapShot
|
|
|
|
|
