#pragma pack(push,bitmap_data,1) ?

**te5la** · 10-07-2008

I have a bitmap loader with...

Code:

#pragma pack(push,bitmap_data,1)


*a few structures relating to the bitmap header files and rgbquad*


#pragma pack(pop,bitmap_data)

but what does the #pragman pack thing do?

Many thanks

**matsp** · 10-07-2008

It tells the compiler that it should not "pad" the data structures within that section (or actually, it should "pad" to a boundary of 1, but as that is the smallest addressable unit of the processor, most likely, that will amount to nothing).

--
Mats

**te5la** · 10-07-2008

cheers mat

**foxman** · 10-07-2008

http://msdn.microsoft.com/en-ca/library/2e70t5y1.aspx

If you have further questions about some of your Visual Studio compiler features, you can find all your answer there.

Note that pragma directives are compiler specific.

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