Day: March 10, 2017

C#鼠标拖动图片控件中的图片

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private Image capturedImage = null;
private Point capturedImageLocation;
private Point capturedImageCursorLocation;
private bool capturedImageIsMouseDown = false;
private bool capturedImageIsFullDisplayed = false;
private void dataGridViewRecord_CellClick(object sender, DataGridViewCellEventArgs e)
{
	string str = dataGridViewRecord.Rows[e.RowIndex].Cells["pic1"].Value.ToString();
	capturedImage = System.Drawing.Image.FromFile(str);
	capturedImageLocation = new Point(0, 0);
	pictureBoxCaptured.Invalidate();
}
 
 
private void pictureBoxCaptured_DoubleClick(object sender, EventArgs e)
{
	if (capturedImageIsFullDisplayed)
		capturedImageIsFullDisplayed = false;
	else
		capturedImageIsFullDisplayed = true;
	pictureBoxCaptured.Invalidate();
}
private void pictureBoxCaptured_MouseDown(object sender, MouseEventArgs e)
{
	if (capturedImageIsFullDisplayed)
		return;
 
	capturedImageIsMouseDown = true;
	capturedImageCursorLocation = new Point(e.X - capturedImageLocation.X, e.Y - capturedImageLocation.Y);
}
private void pictureBoxCaptured_MouseUp(object sender, MouseEventArgs e)
{
	capturedImageIsMouseDown = false;
}
private void pictureBoxCaptured_MouseMove(object sender, MouseEventArgs e)
{
	if (capturedImageIsFullDisplayed)
		return;
	if (!capturedImageIsMouseDown)
		return;
	capturedImageLocation = new Point(e.X - capturedImageCursorLocation.X, e.Y - capturedImageCursorLocation.Y);
	pictureBoxCaptured.Invalidate();
}
private void pictureBoxCaptured_Paint(object sender, PaintEventArgs e)
{
	if (null == capturedImage)
		return;
 
	if (capturedImageIsFullDisplayed)
	{
		e.Graphics.DrawImage(capturedImage, pictureBoxCaptured.ClientRectangle, //e.ClipRectangle,
			new Rectangle(0, 0, capturedImage.Width, capturedImage.Height), GraphicsUnit.Pixel);
	}
	else
	{
		e.Graphics.DrawImage(capturedImage, pictureBoxCaptured.ClientRectangle,
			new Rectangle(-capturedImageLocation.X, -capturedImageLocation.Y, pictureBoxCaptured.Width, pictureBoxCaptured.Height), GraphicsUnit.Pixel);
	}
}

C#子线程让主窗体执行代码

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public delegate void OutDelegate(ParseXmlResult xmlResult);
public void insertDataGridView(ParseXmlResult xmlResult)
{
	if (dataGridViewRecord.InvokeRequired)
	{
		OutDelegate outdelegate = new OutDelegate(insertDataGridView);
		this.BeginInvoke(outdelegate, new object[] { xmlResult });
		return;
	}
 
	DateTime date;
	string[] format = { "yyyyMMddHHmmss" };
	DateTime.TryParseExact(xmlResult.time.Substring(0, 14),
		format,
		System.Globalization.CultureInfo.InvariantCulture,
		System.Globalization.DateTimeStyles.None,
		out date);
 
	dataGridViewRecord.Rows.Add(new object[] { dataGridViewRecord.Rows.Count + 1, date.ToString("yyyy-MM-dd HH:mm:ss"), xmlResult.plate, xmlResult.files[0] });
}
private Thread workThread;
private void ProcessWork()
{
	insertDataGridView(xmlResult);
}
private static void ProcessThread(object param)
{
	MainForm pThis = param as MainForm;
	pThis.ProcessWork();
}
private void btnSearch_Click(object sender, EventArgs e)
{
	workThread = new Thread(new ParameterizedThreadStart(ProcessThread));
	workThread.Start(this);
}