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I have built a wrapper class in vc++6 that loads the DLL, Registers the reg code and has the commands I use using the load libary function. a small sample of the code is below.
First create a data type for each command argument
the syntax is typdef return value (CALLBACK* type name)(input values);
typedef long (CALLBACK* ISED_Oint_PTR)();
typedef long (CALLBACK* ISED_Oint_Iint_PTR)(long);
typedef long (CALLBACK* ISED_Oint_Ichar_PTR)(char *);
typedef long (CALLBACK* ISED_Oint_Ichar_Iint_PTR)(char *, long);
typedef long (CALLBACK* ISED_Oint_Iddddiii_PTR)(double, double, double, double, long, long, long);
typedef long (CALLBACK* ISED_Oint_Iddd_PTR)(double, double, double);
Next declare the commands in a class
class CSECiSEDDLL
{
public:
//Methods
CSECiSEDDLL();
~CSECiSEDDLL();
//Data
long ErrorCode;
bool Loaded;
bool UnLocked;
ISED_Oint_PTR NewDocument;
ISED_Oint_Iint_PTR SetOrigin;
ISED_Oint_Iint_PTR SetMeasurementUnits;
ISED_Oint_Ichar_PTR SetPageSize;
private:
//Methods
void Unlock();
void Init();
//Data
HINSTANCE DLL_Handle; // Handle to DLL
string UnlockCode;
ISED_Oint_Ichar_PTR UnlockKey;
};
Now code the class remember that the commands in the DLL are all prefaced with iSED
//start wrapper
CSECiSEDDLL::CSECiSEDDLL()
{
UnLocked = false;
Loaded = false;
Init();
UnlockCode = "XXXXXXXXXXXXX";
Unlock();
}
CSECiSEDDLL::~CSECiSEDDLL()
{
FreeLibrary(DLL_Handle);
}
void CSECiSEDDLL::Unlock()
{
int errorcode;
errorcode = UnlockKey (const_cast <char *> (UnlockCode.c_str()));
if (errorcode != 0)
{
UnLocked = true;
}
}
void CSECiSEDDLL::Init()
{
DLL_Handle = LoadLibrary("iSEDQuickPDF.dll");
if (DLL_Handle != NULL)
{
ErrorCode = 0;
Loaded = true;
UnlockKey = (ISED_Oint_Ichar_PTR)GetProcAddress(DLL_Handle,"iSEDUnlockKey");
NewDocument = (ISED_Oint_PTR)GetProcAddress(DLL_Handle,"iSEDNewDocument");
SetOrigin = (ISED_Oint_Iint_PTR)GetProcAddress(DLL_Handle,"iSEDSetOrigin");
SetMeasurementUnits = (ISED_Oint_Iint_PTR)GetProcAddress(DLL_Handle,"iSEDSetMeasurementUnits");
SetPageSize = (ISED_Oint_Ichar_PTR)GetProcAddress(DLL_Handle,"iSEDSetPageSize");
NewPages = (ISED_Oint_Iint_PTR)GetProcAddress(DLL_Handle,"iSEDNewPages");
SelectPage = (ISED_Oint_Iint_PTR)GetProcAddress(DLL_Handle,"iSEDSelectPage");
AddImageFromFile = (ISED_Oint_Ichar_Iint_PTR)GetProcAddress(DLL_Handle,"iSEDAddImageFromFile");
SaveToFile = (ISED_Oint_Ichar_PTR)GetProcAddress(DLL_Handle,"iSEDSaveToFile");
}
}
To use declare an instance of the wrapper and use the commands
CSECiSEDDLL ISED;
long rv;
rv = ISED.LoadFromFile(const_cast <char *> (filename.c_str()));
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