我在 Form1 顶层有一个标志：在构造函数中将 addFrame 设置为 false。然后在 picnt 事件中，我检查它是否为假让我画，如果它为真也让我画。这里的问题是我希望在我第一次运行程序时能够绘图！但是当我将 trackBar 向右移动时，我不希望它绘制任何东西。
private void pictureBox1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{
Graphics g = e.Graphics;
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
moveCounter++;
label6.Text = moveCounter.ToString();
if (addFrame == false)
{
WireObjectGraphics.Draw(wireObject1, g);
}
else
{
addFrame = false;
WireObjectGraphics.Draw(wireObject1, g);
}
}
这是我单击以将 addFrame 设置为 true 的按钮单击事件：
private void button16_Click(object sender, EventArgs e)
{
wireObjectAnimation1.AddFrame();
addFrame = true;
trackBar1.Select();
}
在这种情况下，滚动条事件我想这样做，如果我将 trackBar 移动到右侧并且已经没有任何绘制，那么只需在图片框中显示图像就不要绘制任何东西！但是如果我把它移到右边并且已经有画了，那么一定要展示它们。
如果我把它移到左边总是显示以前的平局。
private void trackBar1_Scroll(object sender, EventArgs e)
{
if (addFrame == false)
{
}
else
{
currentFrameIndex = trackBar1.Value - 1;
textBox1.Text = "Frame Number : " + trackBar1.Value;
wireObject1.woc.Set(wireObjectAnimation1.GetFrame(currentFrameIndex));
trackBar1.Minimum = 0;
trackBar1.Maximum = fi.Length - 1;
if (checkBox1.Checked)
{
setpicture(trackBar1.Value);
Graphics g = Graphics.FromImage(pictureBox1.Image);
g.Clear(SystemColors.Control);
pictureBox1.Invalidate();
}
else
{
setpicture(trackBar1.Value);
}
pictureBox1.Refresh();
button1.Enabled = false;
button2.Enabled = false;
button3.Enabled = false;
button4.Enabled = false;
button8.Enabled = false;
SaveFormPicutreBoxToBitMapIncludingDrawings(currentFrameIndex);
return;
}
}
这是 WireObjectGraphics 类中的绘制函数：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Drawing;
namespace AnimationEditor
{
class WireObjectGraphics
{
static Point connectionPointStart;
static Point connectionPointEnd;
static SolidBrush brush;
static Pen p = null;
public WireObjectGraphics()
{
}
public static void Draw(WireObject wo, Graphics graphics)
{
brush = new SolidBrush(Color.Red);
p = new Pen(brush);
Graphics g = graphics;
WireObject wireObject1 = wo;
if (wireObject1 != null)
{
for (int idx = 0; idx < wireObject1.woc.Point_X.Count; ++idx)
{
Point dPoint = new Point((int)wireObject1.woc.Point_X[idx], (int)wireObject1.woc.Point_Y[idx]);
dPoint.X = dPoint.X - 5; // was - 2
dPoint.Y = dPoint.Y - 5; // was - 2
Rectangle rect = new Rectangle(dPoint, new Size(10, 10));
g.FillEllipse(brush, rect);
// bitmapGraphics.FillEllipse(brush, rect);
// g.FillEllipse(brush, rect);
}
for (int i = 0; i < wireObject1._connectionstart.Count; i++)
{
int startIndex = wireObject1._connectionstart[i];
int endIndex = wireObject1._connectionend[i];
connectionPointStart = new Point((int)wireObject1.woc.Point_X[startIndex], (int)wireObject1.woc.Point_Y[startIndex]);
connectionPointEnd = new Point((int)wireObject1.woc.Point_X[endIndex], (int)wireObject1.woc.Point_Y[endIndex]);
p.Width = 2;
g.DrawLine(p, connectionPointStart, connectionPointEnd);
// bitmapGraphics.DrawLine(p, connectionPointStart, connectionPointEnd);
}
}
}
}
}
我需要的是第一次运行程序才能画画！然后，当将 trackBar 移动到右侧以检查绘图是否已经存在时，如果不存在则显示它们仅显示图像，并且只有当我单击按钮时，它才会在框架上添加绘图。
如果我向左移动，总是显示我在其他帧中所做的平局。
线对象类：
构造函数：
class WireObject
{
private string an;
private bool fnExt;
public string lockObject;
private int idx;
public WireObjectCoordinates woc;
private List<int> connectionStart = new List<int>();
private List<int> connectionEnd = new List<int>();
private const string version = "01.00";
string wo_name;
public WireObject( string name )
{
wo_name = name;
woc = new WireObjectCoordinates();
fnExt = false;
}
在wireobject类中，我有一些功能，比如连接点（像素），比如删除像素，比如保存和加载......
WireObjectCoordinates 类是：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace AnimationEditor
{
class WireObjectCoordinates
{
public List<float> Point_X = new List<float>();
public List<float> Point_Y = new List<float>();
public WireObjectCoordinates()
{
}
public WireObjectCoordinates(WireObjectCoordinates w)
{
Point_X.AddRange(w.Point_X);
Point_Y.AddRange(w.Point_Y);
}
public void Set(WireObjectCoordinates w)
{
if (w == null)
{
}
else
{
for (int i = 0; i < Point_X.Count; i++)
{
Point_X[i] = w.Point_X[i];
Point_Y[i] = w.Point_Y[i];
}
}
}
}
}
问题仍然在 Form1 中，带有何时显示像素的标志，我的意思是何时以及如何调用诸如 pictureBox1.Refresh(); 之类的绘制事件；但是一旦它会使用内部的 Draw 函数，一旦它不会。当我运行程序时，让我使用绘图功能，一旦我将 trackBar 移动到右侧，不要使用绘图功能。