Reading file fails with ReadFile

Hi,

I have a windows MDI program that draws some shapes that can
be saved into a file and read from that file.
The save seems to work with the WriteFile function, but for some
reason
the ReadFile function fails. These WriteFile/ReadFile are win32 api
functions.

I'll post both, the read and write function codes here so you can take
a
look at and perhaps see what the problem is.

---- code WriteFile start -----
BOOL WriteDrzFile(HWND hwnd, LPSTR pstrFile, PTHINGZDATA pThingzData)
{
	HANDLE theFile;
	BOOL bSuccess = FALSE;

	DWORD dwSize;

	char szTmp[255], szOut[255];
	PtrThingzShapeSave thingzSaveData;

	pThingzData->pController->shapez = pThingzData->pController-
>_model.GetShapes ();
	thingzSaveData = pThingzData->pController->shapez.thingzSaveData;

	theFile = CreateFile(pstrFile, GENERIC_WRITE, 0, NULL,
						CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);

	if (theFile != INVALID_HANDLE_VALUE)
	{
		DWORD structLength;
		structLength = sizeof(thingzSaveData);
		if (structLength > 0)
		{
			RECT rect;
			DWORD dwBufferSize = structLength + 1;

			if (pThingzData != NULL)
			{
				DWORD dwWritten;

				if(WriteFile(theFile, thingzSaveData, structLength, &dwWritten,
NULL))
				{
                    bSuccess = TRUE;
				}
			}
		}
		CloseHandle(theFile);
	}
	return bSuccess;
}
---- code WriteFile end -----

---- code ReadFile start -----
BOOL ReadDrzFile(HWND hwnd, LPSTR pstrFile, static Controller * pCtrl)
{
	HANDLE theFile;
	DWORD dwSize;
	char szTmp[255], szOut[255];
	PtrThingzShapeSave thingzSaveData;
	PTHINGZDATA pThingzData;

	pThingzData->pController = pCtrl;

	theFile = CreateFile(pstrFile, GENERIC_READ, FILE_SHARE_DELETE, NULL,
						OPEN_ALWAYS, FILE_ATTRIBUTE_ARCHIVE, NULL);

	if (theFile != INVALID_HANDLE_VALUE)
	{
        DWORD dwFileSize;

        dwFileSize = GetFileSize(theFile, NULL);
        if(dwFileSize != 0xFFFFFFFF)
        {
            if (pThingzData != NULL)
            {
                DWORD dwRead;

                if(ReadFile(theFile, thingzSaveData, dwFileSize,
&dwRead, NULL))
                {
					pThingzData->pController->ShapeDrawFile(thingzSaveData, hwnd);
                }
            }
        }
        CloseHandle(theFile);
	}
	return FALSE;
}
---- code ReadFile end -----

In the code the thingzSaveData is a structure which holds the saved
elements.
If there's some more explanations needed, I will try to answer any
questions to
make it clearer.

Thanks in advance.

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