Loading and using DLL

[mujaqo]

I have VDF (Vacuum Fluorescent Display) connected to port COM 6 on my PC, the VDF came with “VFD_DLL.dll” Library and instructions on how to use it but it’s written in C language, can anyone help in converting the below code to VB?


//how to load dll
hDll = LoadLibrary("VFD_DLL.dll");

//how to release dll
FreeLibrary(hDll);

//PortOpen
long PortOpen(char PortName[]);



//how to define function pointer type
typedef long (*PortOpenFunc)();

//how to get function pointer pointed to function of dll
PortOpenFunc lpPortOpenFunc;
lpPortOpenFunc = (PortOpenFunc)GetProcAddress(hDll,"PortOpen");

//how to call function of dll
lpPortOpenFunc();

//DisplayText
long DisplayText(char str[]);

//how to define function pointer type
typedef long (*displayTextFunc)(char str[]);

//how to get function pointer pointed to function of dll
displayTextFunc lpdisplayTextFunc;
lpdisplayTextFunc = (displayTextFunc)GetProcAddress(hDll,"displayText" );

//how to call function of dll
char* Temp = (char*)(const char*)str;
lpdisplayTextFunc(Temp);


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[vincent-leeway]

Well you can connect to your dll written in C using VB by using the following steps, http://support.microsoft.com/kb/106553