回答編集履歴

見直しキャンペーン中

2023/07/17 12:47

投稿

TN8001

スコア9326

test CHANGED Viewed

@@ -2,7 +2,7 @@
 を参考にZoom専用で省コード化。
 端数を切り捨てているからか気持ちずれているような気もする。
-```cs
+```cs:Form1.cs
 using System;
 using System.Diagnostics;
 using System.Drawing;
@@ -93,7 +93,7 @@
 今回は違ったようですが言及してしまったので、閲覧者向けにカーソル下の色の取得の楽なソリューション例。
-```cs
+```cs:Form1.cs
 using System;
 using System.ComponentModel;
 using System.Drawing;
@@ -123,7 +123,7 @@
 }
 ```
-```cs
+```cs:Form1.Designer.cs
 namespace Questions230110
 {
     partial class Form1

リンク切れ

2022/09/15 10:45

投稿

TN8001

スコア9326

test CHANGED Viewed

@@ -1,453 +1,227 @@
-[Select parts of a scaled image with different SizeMode valuesC# Helper	](http://csharphelper.com/blog/2014/10/select-parts-of-a-scaled-image-picturebox-different-sizemode-values-c/)
+[Select parts of a scaled image with different SizeMode valuesC# Helper](https://web.archive.org/web/20210415145016/http://csharphelper.com/blog/2014/10/select-parts-of-a-scaled-image-picturebox-different-sizemode-values-c/)
 を参考にZoom専用で省コード化。
 端数を切り捨てているからか気持ちずれているような気もする。
-```C#
+```cs
 using System;
 using System.Diagnostics;
 using System.Drawing;
 using System.Windows.Forms;
 namespace Questions230110
 {
     public partial class Form1 : Form
     {
         private System.Windows.Forms.PictureBox pictureBox1;
         public Form1()
-        {
+        {
             //InitializeComponent();
             this.pictureBox1 = new System.Windows.Forms.PictureBox();
             ((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).BeginInit();
             this.SuspendLayout();
-            //
+            //
             // pictureBox1
-            //
+            //
             this.pictureBox1.ImageLocation = "https://upload.wikimedia.org/wikipedia/commons/1/1c/City_view_with_blue_sky.jpeg";
             this.pictureBox1.Dock = System.Windows.Forms.DockStyle.Fill;
             this.pictureBox1.Location = new System.Drawing.Point(0, 0);
             this.pictureBox1.Name = "pictureBox1";
             this.pictureBox1.Size = new System.Drawing.Size(800, 450);
             this.pictureBox1.SizeMode = System.Windows.Forms.PictureBoxSizeMode.Zoom;
             this.pictureBox1.TabIndex = 0;
             this.pictureBox1.TabStop = false;
             this.pictureBox1.Click += new System.EventHandler(this.pictureBox1_Click);
-            //
+            //
             // Form1
-            //
+            //
             this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
             this.ClientSize = new System.Drawing.Size(800, 450);
             this.Controls.Add(this.pictureBox1);
             this.Name = "Form1";
             this.Text = "Form1";
             ((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).EndInit();
             this.ResumeLayout(false);
-        }
+        }
         private void pictureBox1_Click(object sender, EventArgs e)
-        {
+        {
             var p = ConvertCoordinates(((MouseEventArgs)e).Location);
             Debug.WriteLine(p);
-        }
+        }
         private Point ConvertCoordinates(Point location)
-        {
+        {
             var x = location.X;
             var y = location.Y;
             var picH = pictureBox1.ClientSize.Height;
             var picW = pictureBox1.ClientSize.Width;
             var imgH = pictureBox1.Image.Height;
             var imgW = pictureBox1.Image.Width;
             int X0;
             int Y0;
             if(picW / (float)picH > imgW / (float)imgH)
-            {
+            {
                 var scaledW = imgW * picH / (float)imgH;
                 var dx = (picW - scaledW) / 2;
                 X0 = (int)((x - dx) * imgH / picH);
                 Y0 = (int)(imgH * y / (float)picH);
-            }
+            }
             else
-            {
+            {
                 X0 = (int)(imgW * x / (float)picW);
                 var scaledH = imgH * picW / (float)imgW;
                 var dy = (picH - scaledH) / 2;
                 Y0 = (int)((y - dy) * imgW / picW);
-            }
+            }
             if(X0 < 0 || imgW < X0 || Y0 < 0 || imgH < Y0)
-            {
+            {
                 return new Point(-1, -1); // 範囲外をどう表すのがいいか
-            }
+            }
             return new Point(X0, Y0);
-        }
+        }
     }
 }
 ```
 ---
 今回は違ったようですが言及してしまったので、閲覧者向けにカーソル下の色の取得の楽なソリューション例。
-```C#
+```cs
 using System;
 using System.ComponentModel;
 using System.Drawing;
 using System.Windows.Forms;
 namespace Questions230110
 {
     public partial class Form1 : Form
     {
         private Bitmap bmp;
         public Form1() => InitializeComponent();
         private void PictureBox1_MouseMove(object sender, MouseEventArgs e)
-        {
+        {
             if(bmp == null) return;
             panel1.BackColor = bmp.GetPixel(e.Location.X, e.Location.Y);
-        }
+        }
         private void PictureBox1_LoadCompleted(object sender, AsyncCompletedEventArgs e) => DrawToBitmap();
         private void PictureBox1_Resize(object sender, EventArgs e) => DrawToBitmap();
         private void DrawToBitmap()
-        {
+        {
             bmp = new Bitmap(pictureBox1.ClientSize.Width, pictureBox1.ClientSize.Height);
             pictureBox1.DrawToBitmap(bmp, pictureBox1.ClientRectangle);
-        }
+        }
     }
 }
 ```
-```C#
+```cs
 namespace Questions230110
 {
     partial class Form1
     {
         /// <summary>
         /// 必要なデザイナー変数です。
         /// </summary>
         private System.ComponentModel.IContainer components = null;
         /// <summary>
         /// 使用中のリソースをすべてクリーンアップします。
         /// </summary>
         /// <param name="disposing">マネージド リソースを破棄する場合は true を指定し、その他の場合は false を指定します。</param>
         protected override void Dispose(bool disposing)
-        {
+        {
             if(disposing && (components != null))
-            {
+            {
                 components.Dispose();
-            }
+            }
             base.Dispose(disposing);
-        }
+        }
         #region Windows フォーム デザイナーで生成されたコード
         /// <summary>
         /// デザイナー サポートに必要なメソッドです。このメソッドの内容を
         /// コード エディターで変更しないでください。
         /// </summary>
         private void InitializeComponent()
-        {
+        {
             this.panel1 = new System.Windows.Forms.Panel();
             this.tableLayoutPanel1 = new System.Windows.Forms.TableLayoutPanel();
             this.pictureBox1 = new System.Windows.Forms.PictureBox();
             this.tableLayoutPanel1.SuspendLayout();
             ((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).BeginInit();
             this.SuspendLayout();
-            //
+            //
             // panel1
-            //
+            //
             this.panel1.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Left | System.Windows.Forms.AnchorStyles.Right)));
             this.panel1.BackColor = System.Drawing.SystemColors.ActiveCaptionText;
             this.panel1.Location = new System.Drawing.Point(375, 6);
             this.panel1.Name = "panel1";
             this.panel1.Size = new System.Drawing.Size(50, 50);
             this.panel1.TabIndex = 0;
-            //
+            //
             // tableLayoutPanel1
-            //
+            //
             this.tableLayoutPanel1.ColumnCount = 3;
             this.tableLayoutPanel1.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(System.Windows.Forms.SizeType.Percent, 50F));
             this.tableLayoutPanel1.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle());
             this.tableLayoutPanel1.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(System.Windows.Forms.SizeType.Percent, 50F));
             this.tableLayoutPanel1.Controls.Add(this.panel1, 1, 1);
             this.tableLayoutPanel1.Dock = System.Windows.Forms.DockStyle.Top;
             this.tableLayoutPanel1.Location = new System.Drawing.Point(0, 0);
             this.tableLayoutPanel1.Name = "tableLayoutPanel1";
             this.tableLayoutPanel1.RowCount = 3;
             this.tableLayoutPanel1.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Percent, 50F));
             this.tableLayoutPanel1.RowStyles.Add(new System.Windows.Forms.RowStyle());
             this.tableLayoutPanel1.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Percent, 50F));
             this.tableLayoutPanel1.Size = new System.Drawing.Size(800, 63);
             this.tableLayoutPanel1.TabIndex = 3;
-            //
+            //
             // pictureBox1
-            //
+            //
             this.pictureBox1.BackColor = System.Drawing.Color.Black;
             this.pictureBox1.Dock = System.Windows.Forms.DockStyle.Fill;
             this.pictureBox1.ImageLocation = "https://upload.wikimedia.org/wikipedia/commons/1/1c/City_view_with_blue_sky.jpeg";
             this.pictureBox1.Location = new System.Drawing.Point(0, 0);
             this.pictureBox1.Name = "pictureBox1";
             this.pictureBox1.Size = new System.Drawing.Size(800, 450);
             this.pictureBox1.SizeMode = System.Windows.Forms.PictureBoxSizeMode.Zoom;
             this.pictureBox1.TabIndex = 0;
             this.pictureBox1.TabStop = false;
             this.pictureBox1.LoadCompleted += new System.ComponentModel.AsyncCompletedEventHandler(this.PictureBox1_LoadCompleted);
             this.pictureBox1.MouseMove += new System.Windows.Forms.MouseEventHandler(this.PictureBox1_MouseMove);
             this.pictureBox1.Resize += new System.EventHandler(this.PictureBox1_Resize);
-            //
+            //
             // Form1
-            //
+            //
             this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
             this.ClientSize = new System.Drawing.Size(800, 450);
             this.Controls.Add(this.tableLayoutPanel1);
             this.Controls.Add(this.pictureBox1);
             this.Name = "Form1";
             this.Text = "Form1";
             this.tableLayoutPanel1.ResumeLayout(false);
             ((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).EndInit();
             this.ResumeLayout(false);
-        }
+        }
         #endregion
         private System.Windows.Forms.PictureBox pictureBox1;
         private System.Windows.Forms.Panel panel1;
         private System.Windows.Forms.TableLayoutPanel tableLayoutPanel1;
     }
 }
 ```