文件拖拽:
效果:将一个文件拖拽到窗体的某个控件时,将该控件的路径显示在该控件上,只要拿到了路径自然可以读取文件中的内容了。
将一个控件的属性AllowDrop设置为true,然后添加DragDrop、DragEnter时间处理函数,如下:
private void txtAppPath_DragEnter(object sender, System.Windows.Forms.DragEventArgs e)
{
if (e.Data.GetDataPresent(DataFormats.FileDrop))
{
e.Effect = DragDropEffects.Link;
}
else
{
e.Effect = DragDropEffects.None;
}
} private void txtAppPath_DragDrop(object sender, System.Windows.Forms.DragEventArgs e)
{
txtLocalFileName.Text = ((System.Array)e.Data.GetData(DataFormats.FileDrop)).GetValue().ToString();
}
图片的缩放和拖拽:
一、实现鼠标滚轮控制图片缩放;
1、设置PixtureBox属性:
Dock:none
SizeMode:StretchImage
2、添加事件:
(1)设置绑定图片路径
private void ScrewInfoForm_Shown(object sender, EventArgs e)
{
//加载装配图纸
string drawingPath = Path.Combine(@"\\192.168.2.136\PCS", productCode + ".png");
try
{
pbxDrawing.Load(drawingPath);
}
catch (Exception ex)
{
MessageBox.Show("加载装配图纸失败,详细:" + ex.Message, "测量", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
}
(2)添加事件1
pbxDrawing.MouseWheel += new MouseEventHandler(pbxDrawing_MouseWheel);
//实现滚轮缩放
private void pbxDrawing_MouseWheel(object sender, System.Windows.Forms.MouseEventArgs e)
{
if (e.Delta < )
{
this.pbxDrawing.Width = this.pbxDrawing.Width * / ;
this.pbxDrawing.Height = this.pbxDrawing.Height * / ;
}
else
{
this.pbxDrawing.Width = this.pbxDrawing.Width * / ;
this.pbxDrawing.Height = this.pbxDrawing.Height * / ;
}
}
(3)添加事件2
//实现移动图片
int xPos;
int yPos;
bool MoveFlag;
private void pbxDrawing_MouseDown(object sender, MouseEventArgs e)
{
this.pbxDrawing.Focus();
MoveFlag = true;//已经按下.
xPos = e.X;//当前x坐标.
yPos = e.Y;//当前y坐标.
} //在picturebox的鼠标按下事件里.
private void pbxDrawing_MouseUp(object sender, MouseEventArgs e)
{
MoveFlag = false;
} //在picturebox鼠标移动
private void pbxDrawing_MouseMove(object sender, MouseEventArgs e)
{
if (MoveFlag)
{
pbxDrawing.Left += Convert.ToInt16(e.X - xPos);//设置x坐标.
pbxDrawing.Top += Convert.ToInt16(e.Y - yPos);//设置y坐标.
}
}