66 lines
3.4 KiB
C
66 lines
3.4 KiB
C
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/****************************************************************************
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* *
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* FILE : SHOWDIB.H *
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* *
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* DESCRIPTION : Header/include file for ShowDIB example. *
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* *
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****************************************************************************/
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/* Macro to restrict a given value to an upper or lower boundary value */
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#define BOUND(x,min,max) ((x) < (min) ? (min) : ((x) > (max) ? (max) : (x)))
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/* Macro to swap two values */
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#define SWAP(x,y) ((x)^=(y)^=(x)^=(y))
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/* Macro to find the minimum of two values */
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#define MIN(x,y) (((x) <= (y)) : x ? y)
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/* Macros to display/remove hourglass cursor for lengthy operations */
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#define StartWait() hcurSave = SetCursor(LoadCursor(NULL,IDC_WAIT))
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#define EndWait() SetCursor(hcurSave)
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#define MINBAND 50 /* Minimum band size used by the program */
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#define BANDINCREMENT 20 /* Decrement for band size while trying */
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/* to determine optimum band size. */
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/* macro to determine if resource is a DIB */
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#define ISDIB(bft) ((bft) == BFT_BITMAP)
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/* Macro to align given value to the closest DWORD (unsigned long ) */
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#define ALIGNULONG(i) ((i+3)/4*4)
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/* Macro to determine to round off the given value to the closest byte */
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#define WIDTHBYTES(i) ((i+31)/32*4)
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#define PALVERSION 0x300
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#define MAXPALETTE 256 /* max. # supported palette entries */
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/***************** GLOBAL VARIABLES *************************/
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extern char achFileName[128]; /* File pathname */
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extern DWORD dwOffset; /* Current position if DIB file pointer */
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extern RECT rcClip; /* Current clip rectangle. */
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extern BOOL fPalColors; /* TRUE if the current DIB's color table */
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/* contains palette indexes not rgb values */
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extern BOOL bDIBToDevice; /* Use SetDIBitsToDevice() to BLT data. */
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extern BOOL bLegitDraw; /* We have a valid bitmap to draw */
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extern WORD wTransparent; /* Mode of DC */
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extern char szAppName[]; /* App. name */
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extern HPALETTE hpalCurrent; /* Handle to current palette */
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extern HANDLE hdibCurrent; /* Handle to current memory DIB */
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extern HBITMAP hbmCurrent; /* Handle to current memory BITMAP */
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extern HANDLE hbiCurrent; /* Handle to current bitmap info struct */
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extern DWORD dwStyle; /* Style bits of the App. window */
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/***********************************************************/
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/* Declarations of functions used in dib.c module */
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/***********************************************************/
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WORD PaletteSize (VOID FAR * pv);
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WORD DibNumColors (VOID FAR * pv);
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HANDLE DibFromBitmap (HBITMAP hbm, DWORD biStyle, WORD biBits, HPALETTE hpal);
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HBITMAP BitmapFromDib (HANDLE hdib, HPALETTE hpal);
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