Load Bitmap in a dll

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C++

Hello,

HDC LoadBitmapToHDC(LPCTSTR bitmap_name, HBITMAP& hBitmap )
{
	hBitmap = ::LoadBitmap(::AfxGetInstanceHandle(), bitmap_name);
	// Create a MemDC to draw to.
	HDC MemDC = ::CreateCompatibleDC(NULL);
	SelectObject(MemDC, hBitmap);
	return MemDC;
}

I have been able to use the above in an application.

However, I am now trying to move the function into a DLL.

I am getting an error message:

error C2039: AfxGetInstanceHandle: is not a member of global namespace

How do I correct this error?

Thanks in Advance.

[Update:]
Thank you for your response.
I have been able to compile the application after adding the header file.

I am getting a runtime error now.

I am not trying to export this function. I am trying to reduce all instances of applications from loading the same bitmaps into memory.
Maybe what I am doing is wrong. I might have no choice but to load all my running instances with the same bitmaps.

I would just like to load the bitmaps in a dll, and use the dll for returning values.

Example: If I am loading a bitmap of a cat, lion and table, in all 3 instances of my application. I am going to be loading them 3 times 3 bitmaps.
I want this to became load all 3 in a dll once and use the rest of the logic to return me values which are integer.

I hope I have explained a bit clearer as to what I intend to do?

[Modified: do not add more to your original question by posting an "answer" that isn't an answer. Modify the original post to include the new information or ask a new question.]