79 lines
2.6 KiB
C
79 lines
2.6 KiB
C
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/*
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TrackBar
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All the useful information for a trackbar.
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*/
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typedef struct {
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HWND hwnd; // our window handle
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HDC hdc; // current DC
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LONG lLogMin; // Logical minimum
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LONG lLogMax; // Logical maximum
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LONG lLogPos; // Logical position
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LONG lSelStart; // Logical selection start
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LONG lSelEnd; // Logical selection end
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UINT wThumbWidth; // Width of the thumb
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UINT wThumbHeight; // Height of the thumb
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int iSizePhys; // Size of where thumb lives
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RECT rc; // track bar rect.
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RECT Thumb; // Rectangle we current thumb
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DWORD dwDragPos; // Logical position of mouse while dragging.
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UINT Flags; // Flags for our window
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int Timer; // Our timer.
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UINT Cmd; // The command we're repeating.
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int nTics; // number of ticks.
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PDWORD pTics; // the tick marks.
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} TrackBar, *PTrackBar;
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// Trackbar flags
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#define TBF_NOTHUMB 0x0001 // No thumb because not wide enough.
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#define TBF_SELECTION 0x0002 // a selection has been established (draw the range)
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/*
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useful constants.
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*/
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#define REPEATTIME 500 // mouse auto repeat 1/2 of a second
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#define TIMER_ID 1
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#define GWW_TRACKMEM 0 /* handle to track bar memory */
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#define EXTRA_TB_BYTES sizeof(PTrackBar) /* Total extra bytes. */
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/*
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Useful defines.
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*/
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#ifdef WIN32
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#define TrackBarCreate(hwnd) SetWindowLong(hwnd,GWW_TRACKMEM,(LONG)LocalAlloc(LPTR,sizeof(TrackBar)))
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#define TrackBarDestroy(hwnd) LocalFree((HLOCAL)GetWindowLong(hwnd,GWW_TRACKMEM))
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#define TrackBarLock(hwnd) (PTrackBar)GetWindowLong(hwnd,GWW_TRACKMEM)
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#else
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#define TrackBarCreate(hwnd) SetWindowWord(hwnd,GWW_TRACKMEM,(WORD)LocalAlloc(LPTR,sizeof(TrackBar)))
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#define TrackBarDestroy(hwnd) LocalFree((HLOCAL)GetWindowWord(hwnd,GWW_TRACKMEM))
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#define TrackBarLock(hwnd) (PTrackBar)GetWindowWord(hwnd,GWW_TRACKMEM)
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#endif
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/*
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Function Prototypes
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*/
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static void NEAR PASCAL DoTrack(PTrackBar, int, DWORD);
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static WORD NEAR PASCAL WTrackType(PTrackBar, LONG);
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static void NEAR PASCAL TBTrackInit(PTrackBar, LONG);
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static void NEAR PASCAL TBTrackEnd(PTrackBar, LONG);
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static void NEAR PASCAL TBTrack(PTrackBar, LONG);
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static void NEAR PASCAL DrawThumb(PTrackBar);
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static HBRUSH NEAR PASCAL SelectColorObjects(PTrackBar, BOOL);
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static void NEAR PASCAL SetTBCaretPos(PTrackBar);
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extern DWORD FAR PASCAL lMulDiv32(DWORD, DWORD, DWORD);
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