| BOOL GetScrollRange(hwnd, fnBar, lpMinPos, lpMaxPos) | |||||
| HWND hwnd; | /* handle of window with scroll bar | */ | |||
| int fnBar; | /* scroll bar flags | */ | |||
| LPINT lpMinPos; | /* address of variable that receives minimum position | */ | |||
| LPINT lpMaxPos; | /* address of variable that receives maximum position | */ | |||
The GetScrollRange function retrieves the current minimum and maximum scroll bar positions for the given scroll bar.
hwnd
Identifies a scroll bar control or a window with a standard scroll bar, depending on the value of the fnBar parameter.
fnBar
Specifies the scroll bar whose positions are to be retrieved. This parameter can be one of the following values:
| Value | Meaning |
| SB_CTL | Retrieves the positions of a scroll bar control. In this case, the hwnd parameter must be the handle of a scroll bar control. |
| SB_HORZ | Retrieves the positions of the window's standard horizontal scroll bar. |
| SB_VERT | Retrieves the positions of the window's standard vertical scroll bar. |
lpMinPos
Points to the integer variable that receives the minimum position.
lpMaxPos
Points to the integer variable that receives the maximum position.
The return value is TRUE if the function is successful, or FALSE if an error occurs. To obtain extended error information, use the GetLastError function.
If the given window does not have standard scroll bars or is not a scroll bar control, the GetScrollRange function copies zero to the lpMinPos and lpMaxPos parameters.
The default range for a standard scroll bar is 0 through 100. The default range for a scroll bar control is empty (both values are zero).
GetScrollPos, SetScrollPos, SetScrollRange