csharp #xaf #pictureedit #zooming

Posted 2021-05-12

using DevExpress.Utils;

this.pictureEdit1.Properties.AllowZoomOnMouseWheel = DevExpress.Utils.DefaultBoolean.True;
this.pictureEdit1.Properties.ShowCameraMenuItem = DevExpress.XtraEditors.Controls.CameraMenuItemVisibility.Auto;
this.pictureEdit1.Properties.ShowScrollBars = true;
this.pictureEdit1.Properties.ZoomingOperationMode = DevExpress.XtraEditors.Repository.ZoomingOperationMode.MouseWheel;

float zoomSpeedFactor = 0.01f;
void pictureEdit1_MouseWheel(object sender, MouseEventArgs e) {
    pictureEdit1.Properties.ZoomPercent += e.Delta * zoomSpeedFactor;
    DXMouseEventArgs.GetMouseArgs(e).Handled = true;
}