CPP Series: Load Dynamic-link Library at runtime

I had trouble with this particular software which I couldn't call the .dll using windows 7. I gave up on using .lib method because a lot of error came out and I couldn't solve the link and conversion errors.

Loading the library at runtime require extra efforts but not so much once you get a hold of it.

Let say we have a .dll file which contain listed functions below:

short TUSBSLC_API Tusbs01lc_Device_Open( short id );
void TUSBSLC_API Tusbs01lc_Device_Close( short id );
short TUSBSLC_API Tusbs01lc_Single_Sample( short id ,double *Data);
short TUSBSLC_API Tusbs01lc_Start_Sample( short id ,short SampleRate);
short TUSBSLC_API Tusbs01lc_Get_Datas( short id ,double *Data,unsigned char *SerNum,unsigned char *Size);
short TUSBSLC_API Tusbs01lc_Zero_Adj( short id, double Data );

Firstly we need to declare in your header file (.h) these definitions:

typedef short (*DEVICE_OPEN)(short);
DEVICE_OPEN Tusbs01lc_Device_Open;

typedef void (*DEVICE_CLOSE)(short);
DEVICE_CLOSE Tusbs01lc_Device_Close;

typedef short (*SINGLE_SAMPLE)(short, double*);
SINGLE_SAMPLE Tusbs01lc_Single_Sample;

typedef short (*START_SAMPLE)(short, short);
START_SAMPLE Tusbs01lc_Start_Sample;

typedef short (*GET_DATAS)(short, double*, unsigned char*, unsigned char*);
GET_DATAS Tusbs01lc_Get_Datas;

typedef short (*ZERO_ADJ)(short, double);
ZERO_ADJ Tusbs01lc_Zero_Adj;

You could give any name to DEVICE_OPEN, DEVICE_CLOSE and so on. The colors will give you hints on how to create your own definition. 

Next, just call the function!!

HINSTANCE dllhandle = LoadLibrary("path\\TUSBSLC.dll");
if(dllhandle != NULL) {
        Tusbs01lc_Device_Open = (DEVICE_OPEN)GetProcAddress(dllhandle, "Tusbs01lc_Device_Open");
        Tusbs01lc_Device_Close = (DEVICE_CLOSE)GetProcAddress(dllhandle, "Tusbs01lc_Device_Close");
        Tusbs01lc_Single_Sample = (SINGLE_SAMPLE)GetProcAddress(dllhandle, "Tusbs01lc_Single_Sample");
        Tusbs01lc_Start_Sample = (START_SAMPLE)GetProcAddress(dllhandle, "Tusbs01lc_Start_Sample");
        Tusbs01lc_Get_Datas = (GET_DATAS)GetProcAddress(dllhandle, "Tusbs01lc_Get_Datas");
        Tusbs01lc_Zero_Adj = (ZERO_ADJ)GetProcAddress(dllhandle, "Tusbs01lc_Zero_Adj");
}
    else {
        ShowMessage("Unable to load the DLL");
} 

Finally, you have to release/free the memory at the end of your program.

if(dllhandle) FreeLibrary(dllhandle);

Good luck!!

LaTeX Series: Thesis Template

I found a good website on thesis template. Feel free to go through the site.

How to LaTeX:
Figure

CPP Series: Pointer to Pointer

Everytime..... this pointer fella give me headache... fuhhh...

here the reference for future headache [link].

This function modify the variable piStuff inside the function putStuff.

Example pointer to double pointer:

int **piStuff;
putStuff(&piStuff);

void putStuff(int ***ppiStuff)
{
    *ppiStuff = new int* [SIZE_A];
     for(int i=0; i<SIZE_A;i++) {
          (*ppiStuff)[i] = new int [SIZE_B];
     }

     for(int i=0; i<SIZE_B;i++) {          
          for(int j=0; j<SIZE_B;j++) {
              (*ppiStuff)[i][j] = iSomeVar;
          }
     }
}


Example pointer to pointer:

int *piStuff;
putStuff(&piStuff);

void putStuff(int **ppiStuff)
{
    *ppiStuff = new int [SIZE];

     for(int j=0; j<SIZE;j++) {         
         (*ppiStuff)[j] = iSomeVar;
     }    
}

Hokkaido 北海道

Awesomeness 

 

9 - 15 September 2013

 

Hokkaido (北海道)

 

Travel Summary

Hokkaido Itinerary

Tanoshimi たのしみ

I Can Sit On My Own

２０１３年 ８月１８日

金曜日

15:00ごろ

福井県福井市大宮６－１０－１６LLハイム５、２０３号室

Witir - Lebih Dari Sekali Dalam Satu Malam?

Di bulan Ramadhan yang mana witir biasanya didirikan sebagai penamat kepada solat terawih. Jika kita bangkit bersahur dan punyai masa untuk terus menunaikan solat sunat lain, ia DIHARUSKAN tanpa perlu dimulai dengan satu rakaat witir. Tidak perlu pula ditutupi dengan witir lain selepas itu.

Wajar dituruti pandangan majoriti ulama yang MELARANG ditunaikan solat witir sekali lagi di akhir malam. Cukup sekali witir yang telah didirikan di akhir terawih bersama imam berteatan dengan saranan Nabi Muhammad s.a.w.

[source]