这是将窗口最小化时如何获得它们的方法:
private static bool EnumWindowsCallback(IntPtr hWnd, IntPtr lParam)
{
bool specialCapturing = false;
if (hWnd == IntPtr.Zero) return false;
if (!IsWindowVisible(hWnd)) return true;
if (!countMinimizedWindows)
{
if (IsIconic(hWnd)) return true;
}
else if (IsIconic(hWnd) && useSpecialCapturing) specialCapturing = true;
if (GetWindowText(hWnd) == PROGRAMMANAGER) return true;
if (GetWindowText(hWnd).Contains("Test"))
windowSnaps.Add(new WindowSnap(hWnd, specialCapturing));
return true;
}
/// <summary>
/// Get the collection of WindowSnap instances fro all available windows
/// </summary>
/// <param name="minimized">Capture a window even it's Minimized</param>
/// <param name="specialCapturring">use special capturing method to capture minmized windows</param>
/// <returns>return collections of WindowSnap instances</returns>
public static WindowSnapCollection GetAllWindows(bool minimized, bool specialCapturring)
{
windowSnaps = new WindowSnapCollection();
countMinimizedWindows = minimized;//set minimized flag capture
useSpecialCapturing = specialCapturring;//set specialcapturing flag
EnumWindowsCallbackHandler callback = new EnumWindowsCallbackHandler(EnumWindowsCallback);
EnumWindows(callback, IntPtr.Zero);
return new WindowSnapCollection(windowSnaps.ToArray(), true);
}
最后,我在windowSnap中有两个示例,两个窗口的应用程序名称分别为Test。
然后在Form1中,将所选窗口带入listBoxSnap并将其聚焦:
在Form1中:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Runtime.InteropServices;
using System.Text;
using System.Windows.Forms;
namespace MinimizeCapture
{
public partial class Form1 : Form
{
[DllImport("user32.dll")]
static extern bool SetForegroundWindow(IntPtr hWnd);
public Form1()
{
InitializeComponent();
}
private void buttonSnap_Click(object sender, EventArgs e)
{
this.listBoxSnap.Items.Clear();
this.pictureBoxSnap.Image = null;
this.listBoxSnap.Items.AddRange
(
WindowSnap.GetAllWindows(this.checkBoxMinimized.Checked, this.checkBoxSpecialMode.Checked).ToArray()
);
}
private void listBoxSnap_SelectedIndexChanged(object sender, EventArgs e)
{
WindowSnap snap = this.listBoxSnap.SelectedItem as WindowSnap;
this.pictureBoxSnap.Image = snap.Image;
SetForegroundWindow(snap.Handle);
}
}
}
问题是,当我第一次在listBoxSnap中选择窗口手柄时,它工作正常,它将选中的窗口手柄置于最前面并对其进行聚焦。
但是当我尝试在listBox中选择另一个窗口句柄时,它什么也没做,就是没有将它放到最前面,也没有将其再次聚焦。
我正在使用:
SetForegroundWindow(snap.Handle);
因此,确实可以将两个窗口置于最前面,并在选择它们时将焦点集中在它们上,但第一次仅一次。如果我想再次执行此操作,则需要关闭csharp程序并再次运行。