converting qstring to unsigned char

Hello every body,

I am new to Qt and need to convert a qstring variable which is a Hex number to an unsinged char array type as you can see bellow

Code:

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QString str = "1234"; // which is the 0x1234 number

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and I need to store it in one of the below data structure fields which is 2 byte (for instance the "unsigned char Base_Addrs[2]" field) :

Code:

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struct wrt_rqst_
{
        unsigned char Dest_MAC[6];
        unsigned char Src_MAC[6];
        unsigned char Eth_Length[2];//should be 0x0800
        unsigned char Wrt_Cmd[2];//should be 0x0000
        unsigned char Base_Addrs[2];
        unsigned char Data_Length[2];//should be 0x02EB
        unsigned char data[1494];//should be set all az 0
 
}*wrt_buff;

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how should I convert the qstring to unsigned char? :confused:

Thanks.

Code:

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int val = str.toInt(0, 16);

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