【发布时间】：2014-01-09 15:09:56
【问题描述】：
我正在做一个钢琴键盘，它也有一个乐谱，所以当你按下键盘上的一个键时，根据持续时间，乐谱上会弹出一个音符（四分音符、半短音符等） .
我有一个表单（称为 Form1），其中有一个面板（Panel1），其中包含由按钮组成的键盘键。我还有一个音乐五线谱，它由一个包含五线谱的 PictureBox（或五线谱不知道它叫什么）和一个保存音高的测试文本框（基本上是映射时播放的音符）
问题是这样的。我需要在五线谱（pictureBox1）上显示音符，所以在作为主要课程的 Form1 中，但每当我写作时
mn = new MusicNote (nPos,nPitch, duration,nShape);
pictureBox1.Controls.Add(this.mn);
pictureBox1.Controls[pictureBox1.Controls.Count - 1].BringToFront(); //Bring the notes OVER the Stave
当我将每个 pictureBox1 替换为 this 或 panel1（例如）
时，它基本上不起作用this.Controls.Add(this.mn);
它会在 FORM1（灰色空间）或键盘本身（请参阅下方以查看键盘）上显示音符。问题在于，它实际上并没有添加到 PictureBox，而是添加到 Form1/Panel
你知道如何解决这个问题并让音乐笔记成为 PictureBox1 的一部分吗？因为我还需要一些方法来处理该图片框，例如当我单击其中一个音符时，它们实际上会以该持续时间播放该声音（其中我仍然需要弄清楚如何将控件从 Form1.cs 传递到 MusicNote.cs）
MusicNote.cs 与“添加”图像有关的部分编码如下：
public class MusicNote : PictureBox
{
public int pitch;
public int duration;
public string noteShape;
string nShape;
bool isDragging = false;
public string rootFolder = @"..\..\\bin\\Debug\\images\\";
ArrayList al = new ArrayList();
SoundPlayer sp = new SoundPlayer();
Timer t1 = new Timer();
public MusicNote(int x, int mPitch, int mDuration,string nShape)
: base()
{
pitch = mPitch;
duration = mDuration;
noteShape = nShape;
Location = new Point(x, 100);
this.Size = new Size(35, 40);
//--------- Get the Image of Note ----------
Bitmap bmp = new Bitmap(@rootFolder + nShape + ".bmp");
this.Image = bmp;
this.BackColor = Color.Transparent;
//-------Mouse Events-------
this.MouseDown += new MouseEventHandler(StartDrag);
this.MouseUp += new MouseEventHandler(StopDrag);
this.MouseMove += new MouseEventHandler(NoteDrag);
}
etc
...
...
...
}
Form1.cs 编码（发布所有内容，因为所有内容都从一种方法连接到另一种方法） 问题在于 private void onMouseUp (object sender, MouseEventArgs e) 这是最后一个方法
using System;
using System.Threading;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Diagnostics;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Media;
using System.Collections;
namespace Piano
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
// Objects of Music Note, Piano Keys, and all variables surronding the Keyboard and Notes
WhiteKey wk;
BlackKey bk;
public int pitch;
public int duration = 0;
string nShape = "";
public const int xOff = 35;
int count = 0;
int nPos = 0;
public string rootFolder = @"..\..\\bin\\Debug\\images\\";
MusicNote mn;
MusicStaff ms;
SoundPlayer sp = new SoundPlayer();
Stopwatch sw = new Stopwatch();
//--------------- White and Black Keys Creation both Buttons and Position------------------
public int[] wKeys = { 1, 3, 5, 6, 8, 10, 12, 13, 15, 17, 18, 20, 22, 24, 25 }; //White Keys notes numbers (pitch)
public int[] bKeys = { 0, 2, 0, 4, 0, 0, 7, 0, 9, 0, 11, 0, 0, 14, 0, 16, 0, 0, 19, 0, 21, 0, 23, 0, 0 }; //Black Keys notes numbers (pitch)
int[] wPos = { 35, 70, 105, 140, 175, 210, 245, 280, 315, 350, 385, 420, 455, 490, 525 }; // Position of White Keys on the Panel
int[] bPos = { 0, 57, 0, 92, 0, 0, 162, 0, 197, 0, 232, 0, 0, 302, 0, 337, 0, 0, 407, 0, 442, 0, 477, 0, 1 }; //Position of the Black Keys in the Panel
private void Form1_Load(object sender, System.EventArgs e)
{
for (int i = 0; i < 15; i++)
{
WhiteKey wk = new WhiteKey(wKeys[i], wPos[i]-35,0); //create a new white Key with [i] Pitch, at that x position and at y =0 position
wk.MouseDown += onMouseDown; //Plays the Key and starts Timer
wk.MouseUp += onMouseUp; // Holds the data like Time and shape and so
this.panel1.Controls.Add(wk); //Give it control (to play and edit)
}
for (int i = 0; i < 25; i++) //same for the Black Keys but instead we use 25 keys and those denoted at 0 are where the WHITE KEYS should be placed
{
if (bKeys[i] != 0)
{
//Same as above but for Black Key which is inherits from WhiteKey
bk = new BlackKey(bKeys[i], bPos[i]-35, 0);
bk.MouseDown += onMouseDown;
bk.MouseUp += onMouseUp;
this.panel1.Controls.Add(bk);
this.panel1.Controls[this.panel1.Controls.Count - 1].BringToFront(); //Make the Black Keys show OVER the white
}
}
}
//Method showing what happens when you do a MouseDown Event
private void onMouseDown(object sender, MouseEventArgs e)
{
wk = sender as WhiteKey; //gets the WhiteKey Controls
pitch = wk.pitch; //assign pitch
sp.SoundLocation = @"..\\..\\bin\\Debug\\sound\\mapped\\" + pitch + ".wav"; //find that pressed note
sp.Play(); //play it
sw.Reset(); //Reset Stop Watch
sw.Start(); //Start Time
}
private void timeTick(object sender, EventArgs e)
{
duration++;
}
private void onMouseUp (object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
sw.Stop(); //Stop time
duration = (int)sw.ElapsedMilliseconds / 100;
textBox.Text += (string)(pitch + " , "); //add the Pitch used to the textbox
// Will determine the Music Note Image
if (duration >= 0 && duration < 2)
{
nShape = "Quaver";
}
else if (duration >= 2 && duration < 5)
{
nShape = "Crotchet";
}
else if (duration >= 5 && duration < 8)
{
nShape = "minim";
}
else if (duration >= 8 && duration < 10)
{
nShape = "DotMin";
}
else if (duration >= 10)
{
nShape = "SemiBreve";
}
count++; //will help Determine the 'x' coordiante of the Music Note
nPos = xOff * count; //moves the x-coordinate by 35 pixels each note
mn = new MusicNote(nPos,pitch,duration,nShape); //Creation of a new MusicNote
pictureBox1.Controls.Add(this.mn); //PROBLEM --- Doesn't add to the PictureBox (Does Nothing)
pictureBox1.Controls[pictureBox1.Controls.Count - 1].BringToFront(); //Brought to front of stave to make sure it doesn't get hidden in background
}
}
}
}
知道如何将 CONTROL 添加到 PictureBox1 并制作 Music Note Show 吗？因为我设法让它在 Form1 和 Panel1 上显示，但在图片框上失败了
FORM1 上带有音符的钢琴外观
根据 Visual Studio DEBUGGER [Piano.Form1]
http://postimg.org/image/vdu0x1gv1/
N.B 很抱歉这篇文章很长，但我不知道该如何解释这个问题。
【问题讨论】：
标签： c# winforms visual-studio-2012 controls picturebox