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Reading Binary Data with TRegistry

Posted on 2003-12-05
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Last Modified: 2010-04-05
I am currently writing an application where I need to be able to read various registry enteries without knowing their types beforehand. All the information read from the registry will be converted to a string. I have written a small bit of code that pretty much handles this, but I am having a problem with binary data. My code is as follows:

        MyReg.OpenKey(RegKey, False);
        RegType := MyReg.GetDataType(RegValue);
        if (RegType = rdString) or (RegType = rdExpandString) then sData := MyReg.ReadString(sValue);
        if RegType = rdInteger then sData := IntToStr(MyReg.ReadInteger(sValue));
        if RegType = rdBinary then
        begin
            lBinaryDataSize := MyReg.GetDataSize(sValue);
            SetLength(Buffer, lBinaryDataSize);

            MyReg.ReadBinaryData(RegValue, Buffer, SizeOf(Buffer));
       end;

"RegKey", "RegValue" are both strings whose values are predetermined earlier in the code. "Buffer" is an array of byte, which as you can see, is resized based on the size of the binary data.

The error I am recieving is when I actually come across some binary data in the registry. Despite the fact that the key type is rdBinary, I get a message that says "Invalid Data Type For 'CustomColors'" (which is the particular key I am trying to read). Any idea of what I may be doing wrong?
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Question by:Thora_Fan
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by:
Ferruccio Accalai earned 125 total points
ID: 9881015
     
MyReg.OpenKey(RegKey, False);
        RegType := MyReg.GetDataType(RegValue);
        if (RegType = rdString) or (RegType = rdExpandString) then sData := MyReg.ReadString(sValue);
        if RegType = rdInteger then sData := IntToStr(MyReg.ReadInteger(sValue));
        if RegType = rdBinary then
        begin
            lBinaryDataSize := MyReg.GetDataSize(sValue);
            SetLength(Buffer, lBinaryDataSize);
            If lBinaryDataSize > 0 then
               MyReg.ReadBinaryData(RegValue, Buffer[0], lBinaryDataSize);
       end;

F68 ;-)
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