This function retrieves information about the first process encountered in a system snapshot.
At a Glance
| Header file: | Tlhelp32.h |
| Windows CE versions: | 2.0 and later |
Syntax
BOOL WINAPI Process32First( HANDLE hSnapshot, LPPROCESSENTRY32 lppe);
Parameters
hSnapshot
Handle to the snapshot returned from a previous call to the CreateToolhelp32Snapshot function.
lppe
Pointer to a PROCESSENTRY32 structure.
Return Value
TRUE indicates that the first entry of the process list has been copied to the buffer. FALSE indicates failure. The ERROR_NO_MORE_FILES error value, returned by GetLastError, indicates that no processes exist or the snapshot does not contain process information.
Remarks
The calling application must set the dwSize member of PROCESSENTRY32 to the size, in bytes, of the structure. Process32First changes dwSize to the number of bytes written to the structure. This will never be greater than the initial value of dwSize, but it may be smaller. If the value is smaller, do not rely on the values of any members whose offsets are greater than this value.
To retrieve information about other processes recorded in the same snapshot, use the Process32Next function.