C#之PixturBox控制項實現縮放和拖動圖片

標籤：error   void   image   one   height   mouse   rgs   window   nbsp   

一、實現滑鼠滾輪控製圖片縮放；

1、設定PixtureBox屬性：

　　Dock：none

　　SizeMode：StretchImage

2、添加事件：

pbxDrawing.MouseWheel += new MouseEventHandler(pbxDrawing_MouseWheel);

 

private void ScrewInfoForm_Shown(object sender, EventArgs e)        {            //載入裝配圖紙            string drawingPath = Path.Combine(@"\\192.168.2.136\PCS", productCode + ".png");            try            {                pbxDrawing.Load(drawingPath);            }            catch (Exception ex)            {                MessageBox.Show("載入裝配圖紙失敗,詳細:" + ex.Message, "測量", MessageBoxButtons.OK, MessageBoxIcon.Error);                return;            }        }

 //實現滾輪縮放        private void pbxDrawing_MouseWheel(object sender, System.Windows.Forms.MouseEventArgs e)        {            if (e.Delta < 0)            {                this.pbxDrawing.Width = this.pbxDrawing.Width * 9 / 10;                this.pbxDrawing.Height = this.pbxDrawing.Height * 9 / 10;            }            else            {                this.pbxDrawing.Width = this.pbxDrawing.Width * 11 / 10;                this.pbxDrawing.Height = this.pbxDrawing.Height * 11 / 10;            }        }

 //實現移動圖片        int xPos;        int yPos;        bool MoveFlag;        private void pbxDrawing_MouseDown(object sender, MouseEventArgs e)        {            this.pbxDrawing.Focus();            MoveFlag = true;//已經按下.            xPos = e.X;//當前x座標.            yPos = e.Y;//當前y座標.        }        //在picturebox的滑鼠按下事件裡.        private void pbxDrawing_MouseUp(object sender, MouseEventArgs e)        {            MoveFlag = false;        }        //在picturebox滑鼠移動        private void pbxDrawing_MouseMove(object sender, MouseEventArgs e)        {            if (MoveFlag)            {                pbxDrawing.Left += Convert.ToInt16(e.X - xPos);//設定x座標.                pbxDrawing.Top += Convert.ToInt16(e.Y - yPos);//設定y座標.            }        }

 

C#之PixturBox控制項實現縮放和拖動圖片