1688商品采集

TEMUKJD/UserComponent/UcComboBoxMutiSelect .cs

@@ -39,6 +39,7 @@ namespace TemuKJD.UserComponent
             }
         }
 
+        Label lblX = null;
         CheckedListBox checkedListBox = null;
         public UcComboBoxMutiSelect()
         {
@@ -52,6 +53,80 @@ namespace TemuKJD.UserComponent
             this.DropDownHeight = 1;
             this.DropDown += UcComboBoxMutiSelect_DropDown;
             this.DropDownClosed += UcComboBoxMutiSelect_DropDownClosed;
+
+            Task.Run(() =>
+            {
+                for (int i = 0; i < 50; i++)
+                {
+                    System.Threading.Thread.Sleep(100);
+                    var parentForm = FindForm();
+                    if (parentForm != null && parentForm.Visible == true)
+                    {
+                        Invoke(new Action(() =>
+                        {
+                            UpdateClearLabel();
+                        }));
+                        break;
+                    }
+                }
+                this.Move += UcComboBoxMutiSelect_Move;
+                this.Resize += UcComboBoxMutiSelect_Resize;
+                this.SizeChanged += UcComboBoxMutiSelect_SizeChanged;
+            });
+        }
+
+        private void UcComboBoxMutiSelect_SizeChanged(object sender, EventArgs e)
+        {
+            UpdateClearLabel();
+        }
+
+        private void UcComboBoxMutiSelect_Resize(object sender, EventArgs e)
+        {
+            UpdateClearLabel();
+        }
+
+        private void UcComboBoxMutiSelect_Move(object sender, EventArgs e)
+        {
+            UpdateClearLabel();
+        }
+
+        private void UpdateClearLabel()
+        {
+            if (lblX == null)
+            {
+                lblX = new Label();
+                lblX.Click += LblX_Click;
+                //lblX.BorderStyle = BorderStyle.FixedSingle;
+                lblX.Text = "×";
+                lblX.ForeColor = Color.FromArgb(63, 126, 255);
+                lblX.BackColor = this.BackColor;
+                lblX.AutoSize = false;
+                //lblX.AutoSize = true;
+                //lblX.Width = 17;
+                lblX.Width = 15;
+                lblX.Height = 19;
+                lblX.SendToBack();
+                Form form = this.FindForm();
+                form.Controls.Add(lblX);
+            }
+            Point relativeLocation = this.GetRelativePosition();
+            //lblX.Location = new Point(relativeLocation.X + this.Width - 19 - lblX.Width, relativeLocation.Y + (this.Height - lblX.Height) / 2);
+            lblX.Location = new Point(relativeLocation.X + this.Width - 19 - lblX.Width, relativeLocation.Y + (this.Height - lblX.Height) / 2);
+            lblX.BringToFront();
+        }
+
+        private void LblX_Click(object sender, EventArgs e)
+        {
+            if (this.lblX.Text == "×")
+            {
+                this.lblX.Text = "↶";
+                this.Text = "";
+            }
+            else
+            {
+                this.lblX.Text = "×";
+                this.Text = "全部";
+            }
         }
 
         private void UcComboBoxMutiSelect_DropDownClosed(object sender, EventArgs e)