bool OsWin32_CheckPrinterInfo(const void* data);
void* OsWin32_ConvertFromNativePrinterInfo(void* hGlobal);
void* OsWin32_ConvertToNativePrinterInfo(void* data);
int OsWin32_EnumerateFamilies(unsigned int hDC, char** families, int max_count);
int OsWin32_EnumerateSizes(unsigned int hDC, const char* name, long* sizes, short* scalable, int max_count);
void OsWin32_SetCaptionStyle(unsigned int handle, bool set);
int OsWin32_GetDefaultPrinterInfo(void* data, int max_size);
void OsWin32_SetClippingRect(unsigned int hDC, int x, int y, int w, int h); 
void OsWin32_StretchBlt(unsigned int hDst, int xd, int yd, int wd, int hd,
												unsigned int hSrc, int xs, int ys, int ws, int hs);
void OsWin32_UpdateWindow(unsigned int handle);