The following example shows how to create a trackbar with the TBS_AUTOTICKS and TBS_ENABLESELRANGE styles. When the trackbar is created, both its range and its selection range are initialized. The page size is also set at this time.
// CreateTrackbar - creates and initializes a trackbar.
//
// Global variable
// g_hinst - instance handle
HWND WINAPI CreateTrackbar(
HWND hwndDlg, // handle of dialog box (parent window)
UINT iMin, // minimum value in trackbar range
UINT iMax, // maximum value in trackbar range
UINT iSelMin, // minimum value in trackbar selection
UINT iSelMax) // maximum value in trackbar selection
{
InitCommonControls(); // loads common control's DLL
hwndTrack = CreateWindowEx(
0, // no extended styles
TRACKBAR_CLASS, // class name
"Trackbar Control", // title (caption)
WS_CHILD | WS_VISIBLE |
TBS_AUTOTICKS | TBS_ENABLESELRANGE, // style
10, 10, // position
200, 30, // size
hwndDlg, // parent window
ID_TRACKBAR, // control identifier
g_hinst, // instance
NULL // no WM_CREATE parameter
);
SendMessage(hwndTrack, TBM_SETRANGE,
(WPARAM) TRUE, // redraw flag
(LPARAM) MAKELONG(iMin, iMax)); // min. & max. positions
SendMessage(hwndTrack, TBM_SETPAGESIZE,
0, (LPARAM) 4); // new page size
SendMessage(hwndTrack, TBM_SETSEL,
(WPARAM) FALSE, // redraw flag
(LPARAM) MAKELONG(iSelMin, iSelMax);
SendMessage(hwndTrack, TBM_SETPOS,
(WPARAM) TRUE, // redraw flag
(LPARAM) iSelMin);
SetFocus(hwndTrack);
return hwndTrack;
}