更改滚动条的值

我创建了一个拾色器，并且我有一个“输入”和“输出”。在输入中，我有4个滚动条，输出中有预览，3个文本框与输出。更改滚动条的值

当您单击预览时，窗口将打开并显示一个颜色对话框。它可以正常工作并返回十六进制值。

但是，我想把它在滚动条中返回的十六进制值。

我认为我必须将它转换为RGB或Int，然后设置滚动条值。

我该怎么做？从图片框

代码：

private void pictureBox1_Click(object sender, EventArgs e) 
    { 
     if (colorDialog1.ShowDialog() == System.Windows.Forms.DialogResult.OK) 
     { 
      pictureBox1.BackColor = colorDialog1.Color; 
      string color, colorRGB; 
      color = string.Format("{0:X8}", pictureBox1.BackColor.ToArgb()); 
      colorRGB = string.Format("{0:X6}", pictureBox1.BackColor.ToArgb()); 
      hexResult = color; 
      pawnTextBox.Text = "#define " + colorNameTxtBox.Text + " 0x" + hexResult; 
      hexTextBox.Text = "0x" + hexResult; 
     } 
    }

代码从滚动条：

private void alphaScroll_Scroll(object sender, ScrollEventArgs e) 
    { 
     Color previewColor = Color.FromArgb(alphaScroll.Value, redScroll.Value, greenScroll.Value, blueScroll.Value); 
     pictureBox1.BackColor = previewColor; 

     int colorHex = alphaScroll.Value | (blueScroll.Value << 8) | (greenScroll.Value << 16) | (redScroll.Value << 24); 
     hexResult = "0x" + string.Format("{0:X}", colorHex.ToString("X8")); 

     hexTextBox.Text = hexResult; 
     pawnTextBox.Text = "#define " + colorNameTxtBox.Text + " " + hexResult; 
     alphaResultLabel.Text = alphaScroll.Value.ToString(); 
    } 

    private void redScroll_Scroll(object sender, ScrollEventArgs e) 
    { 
     Color previewColor = Color.FromArgb(alphaScroll.Value, redScroll.Value, greenScroll.Value, blueScroll.Value); 
     pictureBox1.BackColor = previewColor; 

     int colorHex = alphaScroll.Value | (blueScroll.Value << 8) | (greenScroll.Value << 16) | (redScroll.Value << 24); 
     hexResult = "0x" + string.Format("{0:X}", colorHex.ToString("X8")); 

     int red = redScroll.Value; 
     int green = greenScroll.Value; 
     int blue = blueScroll.Value; 

     getColorTxtBox.Text = red.ToString("X2") + green.ToString("X2") + blue.ToString("X2"); 
     embeddTextBox.Text = "{" + red.ToString("X2") + green.ToString("X2") + blue.ToString("X2") + "}"; 
     hexTextBox.Text = hexResult; 
     pawnTextBox.Text = "#define " + colorNameTxtBox.Text + " " + hexResult; 
     redResultLabel.Text = redScroll.Value.ToString(); 
    } 

    private void greenScroll_Scroll(object sender, ScrollEventArgs e) 
    { 
     Color previewColor = Color.FromArgb(alphaScroll.Value, redScroll.Value, greenScroll.Value, blueScroll.Value); 
     pictureBox1.BackColor = previewColor; 

     int colorHex = alphaScroll.Value | (blueScroll.Value << 8) | (greenScroll.Value << 16) | (redScroll.Value << 24); 
     hexResult = "0x" + string.Format("{0:X}", colorHex.ToString("X8")); 

     int red = redScroll.Value; 
     int green = greenScroll.Value; 
     int blue = blueScroll.Value; 

     getColorTxtBox.Text = red.ToString("X2") + green.ToString("X2") + blue.ToString("X2"); 
     embeddTextBox.Text = "{" + red.ToString("X2") + green.ToString("X2") + blue.ToString("X2") + "}"; 
     hexTextBox.Text = hexResult; 
     pawnTextBox.Text = "#define " + colorNameTxtBox.Text + " " + hexResult; 
     greenResultLabel.Text = greenScroll.Value.ToString(); 
    } 

    private void blueScroll_Scroll(object sender, ScrollEventArgs e) 
    { 
     Color previewColor = Color.FromArgb(alphaScroll.Value, redScroll.Value, greenScroll.Value, blueScroll.Value); 
     pictureBox1.BackColor = previewColor; 

     int colorHex = alphaScroll.Value | (blueScroll.Value << 8) | (greenScroll.Value << 16) | (redScroll.Value << 24); 
     hexResult = "0x" + string.Format("{0:X}", colorHex.ToString("X8")); 

     int red = redScroll.Value; 
     int green = greenScroll.Value; 
     int blue = blueScroll.Value; 

     getColorTxtBox.Text = red.ToString("X2") + green.ToString("X2") + blue.ToString("X2"); 
     embeddTextBox.Text = "{" + red.ToString("X2") + green.ToString("X2") + blue.ToString("X2") + "}"; 
     hexTextBox.Text = hexResult; 
     pawnTextBox.Text = "#define " + colorNameTxtBox.Text + " " + hexResult; 
     blueResultLabel.Text = blueScroll.Value.ToString(); 
    }

来源

2013-06-03 Los799

请提供您的代码，并清楚地说明你的问题。 – PSS

我不知道要提供什么代码，代码很大。我有4个滚动条（阿尔法，红色，绿色和蓝色），并希望把一个十六进制值。但我将不得不使用整数来它，我不知道我该怎么做。 – Los799

你可以让你的滚动条有'最小'值'0'和'最大'255吗？然后从那里做一些转换？ – gunr2171

没有为在.NET函数：

Color c = System.Drawing.ColorTranslator.FromHtml(hmtlcolor);

来源

2013-06-12 18:40:59 mathsRuinedme

Disclamer：这是由作者张贴在问题中，替换有问题的代码。作为一个社区维基答案，我已经回滚了这个问题并将解决的代码放在这里。

如果有人让我是同样的问题，这里的解决方案：

string c = color.ToString(); 
string redHex = c.Substring(0, 2); 
string greenHex = c.Substring(2, 2); 
string blueHex = c.Substring(4, 2); 
string alphaHex = c.Substring(6, 2); 

int red = Convert.ToInt32(redHex, 16); 
int green = Convert.ToInt32(greenHex, 16); 
int blue = Convert.ToInt32(blueHex, 16); 
int alpha = Convert.ToInt32(alphaHex, 16); 

alphaScroll.Value = alpha; 
redScroll.Value = red; 
greenScroll.Value = green; 
blueScroll.Value = blue; 

alphaResultLabel.Text = alphaScroll.Value.ToString(); 
redResultLabel.Text = redScroll.Value.ToString(); 
greenResultLabel.Text = greenScroll.Value.ToString(); 
blueResultLabel.Text = blueScroll.Value.ToString();

来源

2014-05-08 20:32:20 gunr2171

更改滚动条的值

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