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| {{PageAuthor|preisl}} | | {{PageAuthor|preisl}} |
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| == The Function ==
| | riczelel |
| <highlight-nsis>
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| ;
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| ; Check whether an ODBC entry exists or not
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| ;
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| ; Input: Name of the ODBC entry
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| ; Output: TRUE, FALSE
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| ;
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| ; Usage
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| ;
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| ; Push "MyODBCEntry"
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| ; Call ODBCEntryExists
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| ; Pop "$1"
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| ; MessageBox MB_OK|MB_ICONINFORMATION "ODBC entry 'MyODBCEntry' exists: $1"
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| ;
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| !macro ODBCEntryExistsMacro
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| ; Clear all errors at the beginning
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| ClearErrors
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| ; Pop the name of the ODBC entry from the stack
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| Exch $R0
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| IfErrors InvalidParameter CheckODBCEntry
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| InvalidParameter:
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| MessageBox MB_OK|MB_ICONEXCLAMATION "ODBCEntryExists: Please push the name of the ODBC entry first."
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| StrCpy $R0 "FALSE"
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| Goto Done
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| CheckODBCEntry:
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| ClearErrors
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| ReadRegStr $R0 HKEY_LOCAL_MACHINE "SOFTWARE\ODBC\ODBC.INI\ODBC Data Sources" "$R0"
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| IfErrors NotFound Found
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| NotFound:
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| StrCpy $R0 "FALSE"
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| Goto Done
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| Found:
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| StrCpy $R0 "TRUE"
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| Goto Done
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| Done:
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| Exch $R0
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| !macroend
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| Function ODBCEntryExists
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| !insertmacro ODBCEntryExistsMacro
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| FunctionEnd
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| Function un.ODBCEntryExists
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| !insertmacro ODBCEntryExistsMacro
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| FunctionEnd
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| </highlight-nsis>
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| [[Category:Database Functions]]
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