GetProcAddress 宏

#define FUNC_ADDR(hDll, func) pf##func func = 

(pf##func)GetProcAddress(hDll,#func);
if(! func) {
AfxMessageBox("GetAddrErr"#func);
}

HMODULE hDll = LoadLibrary("InvoicePrintMP512.dll");
if(!hDll) {
AfxMessageBox("LoadErr");
}
FUNC_ADDR(hDll, OpenDevice)
FUNC_ADDR(hDll, CloseDevice)