Converting negative CString to DWORD

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CString sHandle;
DWORD ClientHandle;

sHandle = _T("134");
CStringA pszCharacterString (sHandle);
ClientHandle = atoi(pszCharacterString); //client handle is 134

This is working fine. But for this:

CString sHandle;
DWORD ClientHandle;

sHandle = _T("-134"); //a negative sign at front
CStringA pszCharacterString (sHandle);
ClientHandle = atoi(pszCharacterString); //this fails, client handle is 424967162

How do i implement it for CString _T("-134") to convert to DWord

Posted 3-Apr-12 7:58am

amarasat

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C^hris L^osinger · Accepted Answer · 2012-04-03T08:02:00

Solution 1

DWORDs are unsigned. so 424967162 is (DWORD)(int)(-134)

see also: Two's Complement[^]

Posted 3-Apr-12 8:02am

C^hris L^osinger154.1K

Jochen Arndt · Accepted Answer · 2012-04-03T08:02:00

Solution 2

ClientHandle is of type DWORD which is an unsigned number. Just use an int as returned from atoi().

Posted 3-Apr-12 8:02am

Jochen Arndt