MCStep/Unipos API - MICRODESIGN GmbH

2.5 Beispiel
MCStep API
Nachfolgend finden Sie den Quellcode eines kleinen C++-Fragments, welches ein MCStep Programm
von der Festplatte liest und an die angeschlossene MCStep Steuerung überträgt.
BOOL TransferFile(ULONG dwProgram, PCHAR szFileName)
{
HMODULE hDLL = LoadLibrary(„MCStep.DLL“);
If (!hDLL)
Return FALSE;
MCStep_Online = (ULONG (WINAPI *)(VOID)) GetProcAddress(hDLL, "MCStep_Online");
MCStep_ProgramWrite = (ULONG (WINAPI *)(ULONG, PCHAR))
GetProcAddress(hDLL, "MCStep_Online");
If (MCStep_Online() != MCSTEP_ERR_NONE)
{
FreeLibrary(hDLL);
Return FALSE;
}
HANDLE hFile = CreateFile(szFileName, GENERIC_READ, FILE_SHARE_READ, NULL,
OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
If (hFile == INVALID_HANDLE_VALUE)
{
FreeLibrary(hDLL);
Return FALSE;
}
ULONG dwSize = GetFileSize(hFile, NULL);
PCHAR szBuffer = new CHAR[dwSize + 1];
ZeroMemory(szBuffer, dwSize + 1);
ULONG dwReadSize = 0;
If (!ReadFile(hFile, szΒuffer, dwSize, &dwReadSize, NULL))
{
delete szBuffer;
CloseHandle(hFile);
FreeLibrary(hDLL);
Return FALSE;
}
CloseHandle(hFile);
If (MCStep_ProgramWrite(dwProgram, szBuffer) != MCSTEP_ERR_NONE)
{
delete szBuffer;
FreeLibrary(hDLL);
Return FALSE;
}
delete szBuffer;
FreeLibrary(hDLL);
Return TRUE;
Seite 14 Copyright © MICRO DESIGN GmbH Stand: Februar 2006