（软输入面板）重叠控件

简介

   

这篇文章给出了一个简单但很有效的解释，解决问题时，您的控件是不可见的，当你打开 inputpanel。 你可以看到在所有的控件的截图是基于适应 inputpanel 和可用空间。

使用代码

添加到项目中的类。 这是一个 静态 类，所以它可以调用任何形式。 为了让这项工作，你需要添加一个 inputpanel 控制每个窗体。 如果您使用的是tabpages，那么你通过只在当前标签页。 例如：

OverLappingInputPanel.Inputpanel(tabControl1.TabPages
[tabControl1.SelectedIndex].Controls, inputPanel1.Enabled, 
inputPanel1.VisibleDesktop.Height); 

using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;  

namespace MFA_Common
{
    public static class OverLappingInputPanel
    {
        private static int oldrest = 0;
        private static int oldheight = 0;
        private static int oldtop = 0;
        private static Control isFocused = null;

        /// <summary>
        /// Brings the control that has focus on top of the inputpanel
        /// </summary>
        /// <param name=""controls""></param>
        /// <param name=""SIDCollaps""></param>
        public static void Inputpanel(Control.ControlCollection controls,
            Boolean SIDExpended, int Visualdesktopheight)
        {
            try
            {
                if (controls != null)
                {
                    if (SIDExpended == true)
                    {
                            //Loop through the controls to determinate which has focus
                            //this can be avoided if the gotfocus event is fired
                            //for each control that is beneath the inputpanel if expanded

                                foreach (Control ctrl in controls)
                            {
                                if (ctrl.Focused)
                                {
                                    isFocused = ctrl;
                                    // if this is not the case calculate the needed space
                                    int rest = Visualdesktopheight - (
                                        ctrl.Top + ctrl.Height);
                                    if (rest < 0)
                                    {
                                        //move each control up with the calculated space
                                        foreach (Control ctrl2 in controls)
                                        {
                                            ctrl2.Top = ctrl2.Top + rest;
                                        }
                                        oldrest = rest;

                                    }
                                    if (ctrl.Height > Visualdesktopheight)
                                    {
                                        oldtop = ctrl.Top; 
                                        oldheight = ctrl.Height;
                                        ctrl.Height = Visualdesktopheight;
                                        ctrl.Top = 0;
                                    }
                                }
                            }

                            //escape the current function if the selected control is
                            //not under the inputpanel
                            return;
                    }
                    else
                    {
                        //when the inputpanel is hidden, recalculate the top position
                        //for each control.
                        //the old value has to be reversed *-1 to inverse the changes
                        //if the control was bigger than the available screen, then
                        //give it back its original value 
                        if (oldheight != 0)
                        {
                            isFocused.Top = oldtop; 
                            isFocused.Height = oldheight;
                            oldheight = 0;
                        }
                        foreach (Control ctrl2 in controls)
                        {
                            ctrl2.Top = ctrl2.Top + (-1 * oldrest);
                        }
                        oldrest = 0;
                    }
                }
            }

            catch 
            {
                //the ObjectDisposedException is trapped here. This occurs when the user 
                //doesn't closes the sip before moving to an other screen
                //if an inputpanel is closed on an other form, 
                //then the object that is stored is dispose
                //if this is the case, catch the exception and set the object to null;
                oldrest = 0;
                controls = null;
            }
        }
    }
}