■ XtraScrollableControl 클래스에서 마우스 휠 이벤트를 사용하는 방법을 보여주낟.
▶ 예제 코드 (C#)
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using DevExpress.XtraEditors; ... /// <summary> /// 스크롤 가능 컨트롤 /// </summary> private XtraScrollableControl scrollableControl; ... /// <summary> /// 스크롤 헬퍼 /// </summary> private ScrollHelper scrollHelper = null; ... this.scrollHelper = new ScrollHelper(this.scrollableControl); this.scrollHelper.EnableScrollOnMouseWheel(); ... if(this.scrollHelper != null) { this.scrollHelper.DisableScrollOnMouseWheel(); } |
▶ ScrollHelper.cs
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using System; using System.Windows.Forms; using DevExpress.Utils; using DevExpress.XtraEditors; namespace DSCORE.WINFORM.UI.CONTROL.DEVEXPRESS { /// <summary> /// 스크롤 헬퍼 /// </summary> /// <remarks>XtraScrollableControl의 마우스 휠 기능을 제공한다.</remarks> public class ScrollHelper { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 소스 컨트롤 /// </summary> private XtraScrollableControl sourceControl; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - ScrollHelper(sourceControl) /// <summary> /// 생성자 /// </summary> /// <param name="sourceControl">소스 컨트롤</param> public ScrollHelper(XtraScrollableControl sourceControl) { this.sourceControl = sourceControl; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region 마우스 WHEEL 스크롤 활성화 하기 - EnableScrollOnMouseWheel() /// <summary> /// 마우스 WHEEL 스크롤 활성화 하기 /// </summary> public void EnableScrollOnMouseWheel() { sourceControl.VisibleChanged += sourceControl_VisibleChanged; } #endregion #region 마우스 WHEEL 스크롤 비활성화 하기 - DisableScrollOnMouseWheel() /// <summary> /// 마우스 WHEEL 스크롤 비활성화 하기 /// </summary> public void DisableScrollOnMouseWheel() { sourceControl.VisibleChanged -= sourceControl_VisibleChanged; UnsubscribeFromMouseWheel(sourceControl.Controls); sourceControl = null; } #endregion ////////////////////////////////////////////////////////////////////////////////////////// Private //////////////////////////////////////////////////////////////////////////////// Event #region 소스 컨트롤 표시 여부 변경시 처리하기 - sourceControl_VisibleChanged(sender, e) /// <summary> /// 소스 컨트롤 표시 여부 변경시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void sourceControl_VisibleChanged(object sender, EventArgs e) { sourceControl.Select(); UnsubscribeFromMouseWheel(sourceControl.Controls); SubscribeToMouseWheel(sourceControl.Controls); } #endregion #region 컨트롤 마우스 WHEEL 처리하기 - control_MouseWheel(sender, e) /// <summary> /// 컨트롤 마우스 WHEEL 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void control_MouseWheel(object sender, MouseEventArgs e) { DXMouseEventArgs.GetMouseArgs(e).Handled = true; int scrollValue = sourceControl.VerticalScroll.Value; int largeChange = sourceControl.VerticalScroll.LargeChange; if(e.Delta < 0) { sourceControl.VerticalScroll.Value += sourceControl.VerticalScroll.LargeChange; } else { if(scrollValue < largeChange) { sourceControl.VerticalScroll.Value = 0; } else { sourceControl.VerticalScroll.Value -= largeChange; } } } #endregion //////////////////////////////////////////////////////////////////////////////// Function #region 마우스 WHEEL 구독하기 - SubscribeToMouseWheel(controlCollection) /// <summary> /// 마우스 WHEEL 구독하기 /// </summary> /// <param name="controlCollection">컨트롤 컬렉션</param> private void SubscribeToMouseWheel(Control.ControlCollection controlCollection) { foreach(Control control in controlCollection) { control.MouseWheel += control_MouseWheel; SubscribeToMouseWheel(control.Controls); } } #endregion #region 마우스 WHEEL 구독 취소하기 - UnsubscribeFromMouseWheel(controlCollection) /// <summary> /// 마우스 WHEEL 구독 취소하기 /// </summary> /// <param name="controlCollection">컨트롤 컬렉션</param> private void UnsubscribeFromMouseWheel(Control.ControlCollection controlCollection) { foreach(Control control in controlCollection) { control.MouseWheel -= control_MouseWheel; UnsubscribeFromMouseWheel(control.Controls); } } #endregion } } |