1，目的：
2，知识点：
[DllImport("user32.dll", SetLastError = true)]
public static extern bool RegisterHotKey(IntPtr hWnd, int id, KeyModifiers fsModifiers, Keys vk);[DllImport("user32.dll", SetLastError = true)]
public static extern bool UnregisterHotKey(IntPtr hWnd, int id);
[DllImport("user32.dll")]
public static extern IntPtr CopyIcon(IntPtr hIcon);
[DllImport("user32.dll", EntryPoint = "GetCursorInfo")]
public static extern bool GetCursorInfo(ref CURSORINFO cInfo);
[DllImport("user32.dll", EntryPoint = "GetIconInfo")]
public static extern bool GetIconInfo(IntPtr hIcon, out ICONINFO iInfo);
[DllImport("kernel32")]
public static extern long WritePrivateProfileString(string section, string key, string val, string filePath);
[DllImport("kernel32")]
public static extern int GetPrivateProfileString(string section, string key, string def, StringBuilder retval, int size, string filePath);
- 系统消息的重写。(Message相关链接:Message类的Msg属性所关联的所有ID_msg=0x001a-CSDN博客)
protected override void WndProc(ref Message m)
{//WM_HOTKEY=0x0312，热键关联的消息IDconst int WM_HOTKEY = 0x0312;//按快捷键 switch (m.Msg){case WM_HOTKEY:switch (m.WParam.ToInt32()){case 81: //按下的是Shift+F string ss = "";CaptureImage(ref ss);break;}break;}base.WndProc(ref m);
}
3，效果展示:
4代码:
public partial class Form1 : Form{public Form1(){InitializeComponent();}bool isCaptureIcon = false;string savePath;private void Form1_Load(object sender, EventArgs e){//判断是否存在配置文件如果不存在则创建，如果存在则读取string configPath = Path.GetFullPath("../../config.ini");if (File.Exists(configPath)){savePath = ReadFromINI(configPath, "Configuration", "Location");string str = ReadFromINI(configPath, "Configuration", "CaptureIcon");bool result;if (bool.TryParse(str, out result)){isCaptureIcon = result;}else{isCaptureIcon = false;}}else{File.Create(configPath);isCaptureIcon = false;}if (string.IsNullOrEmpty(savePath)){//获取当前启动位置的盘string startLocation = Application.StartupPath;string defaultLocation = Directory.GetDirectoryRoot(startLocation);savePath = defaultLocation;}textBox1.Text = savePath;checkBox1.Checked = isCaptureIcon;//进行热键注册APIHelper.RegisterHotKey(this.Handle, 81, KeyModifiers.Shift, Keys.C);}//设置截图存储路径private void btnOpenF_Click(object sender, EventArgs e){using (FolderBrowserDialog fbd = new FolderBrowserDialog()){if (fbd.ShowDialog() == DialogResult.OK){savePath = textBox1.Text = fbd.SelectedPath;}}}//保存配置private void btnSave_Click(object sender, EventArgs e){string iniPath = Path.GetFullPath("../../config.ini");if (!File.Exists(iniPath)){File.Create(iniPath);}WriteToINI(iniPath, "Configuration", "Location", textBox1.Text);WriteToINI(iniPath, "Configuration", "CaptureIcon", isCaptureIcon.ToString());MessageBox.Show("已保存", "信息", MessageBoxButtons.OK, MessageBoxIcon.Information);}private void checkBox1_CheckedChanged(object sender, EventArgs e){isCaptureIcon = checkBox1.Checked;}private void Form1_FormClosing(object sender, FormClosingEventArgs e){//热键注销APIHelper.UnregisterHotKey(this.Handle, 81);}//隐藏窗口private void btnHide_Click(object sender, EventArgs e){this.Hide();}private void btnCapture_Click(object sender, EventArgs e){string filePath = "";if (CaptureImage(ref filePath)){MessageBox.Show("已截图:" + filePath);}else{MessageBox.Show("截图失败");}}//双击图标显示窗口private void notifyIcon1_DoubleClick(object sender, EventArgs e){this.Show();this.WindowState = FormWindowState.Normal;this.Activate();}private void toolStripExit_Click(object sender, EventArgs e){APIHelper.UnregisterHotKey(this.Handle, 81);Application.Exit();}private void toolStripShow_Click(object sender, EventArgs e){this.Visible = true;}//对接收的消息进行重写protected override void WndProc(ref Message m){//WM_HOTKEY=0x0312，热键关联的消息IDconst int WM_HOTKEY = 0x0312;//按快捷键 switch (m.Msg){case WM_HOTKEY:switch (m.WParam.ToInt32()){case 81: //按下的是Shift+F string ss = "";CaptureImage(ref ss);break;}break;}base.WndProc(ref m);}bool CaptureImage(ref string filePath){Bitmap img;if (!isCaptureIcon){img = CaptureNoCursor();string imgDir = Path.Combine(savePath, "Image", "NoCursor");if (!Directory.Exists(imgDir)){Directory.CreateDirectory(imgDir);}string fileName = "IMG_" + DateTime.Now.ToString("HHmmss") + ".png";filePath = Path.Combine(imgDir, fileName);}else{img = CaptureCursor();string imgDir = Path.Combine(savePath, "Image", "Cursor");if (!Directory.Exists(imgDir)){Directory.CreateDirectory(imgDir);}string fileName = "IMG_" + DateTime.Now.ToString("HHmmss") + ".png";filePath = Path.Combine(imgDir, fileName);}if (img != null){img.Save(filePath, System.Drawing.Imaging.ImageFormat.Png);return true;}else{return false;}}/// <summary>/// 不含光标的截图/// </summary>/// <returns></returns>Bitmap CaptureNoCursor(){//获取屏幕尺寸int width = APIHelper.GetSystemMetrics(0);int height = APIHelper.GetSystemMetrics(1);//创建图片Bitmap img = new Bitmap(width, height);using (Graphics g = Graphics.FromImage(img)){g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;g.CopyFromScreen(new Point(0, 0), new Point(0, 0), new Size(width, height));}return img;}/// <summary>/// 包含光标的截图/// </summary>/// <returns></returns>Bitmap CaptureCursor(){//获取光标信息CURSORINFO cursor = new CURSORINFO();cursor.cbSize = Marshal.SizeOf(cursor);if (APIHelper.GetCursorInfo(ref cursor)){//flags==1时光标处于显示中if (cursor.flags == 1){ICONINFO iconinfo;//复制光标IntPtr hwn = APIHelper.CopyIcon(cursor.hCursor);//获取光标信息if (APIHelper.GetIconInfo(hwn, out iconinfo)){Icon icon = Icon.FromHandle(hwn);Point iconScreenPoint = new Point(cursor.ptScreenPos.X - iconinfo.xHotspot, cursor.ptScreenPos.Y - iconinfo.yHotspot);//获取屏幕尺寸int width = Screen.PrimaryScreen.Bounds.Width;int height = Screen.PrimaryScreen.Bounds.Height;//创建图片Bitmap img = new Bitmap(width, height);using (Graphics g = Graphics.FromImage(img)){g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;g.CopyFromScreen(new Point(0, 0), new Point(0, 0), new Size(width, height));g.DrawIcon(icon, iconScreenPoint.X, iconScreenPoint.Y);}return img;}}}return null;}public static string ReadFromINI(string filePath, string rootValue, string key, string defValue = ""){StringBuilder sb = new StringBuilder(1024);APIHelper.GetPrivateProfileString(rootValue, key, defValue, sb, 1024, filePath);return sb.ToString();}public static void WriteToINI(string filePath, string rootValue, string key, string newVal){APIHelper.WritePrivateProfileString(rootValue, key, newVal, filePath);}}/// <summary>/// 有关图标或光标的信息/// </summary>[StructLayout(LayoutKind.Sequential)]struct ICONINFO{/// <summary>/// 指定此结构是定义图标还是游标。 值为 TRUE 指定图标; FALSE 指定游标。/// </summary>public bool fIcon;/// <summary>/// 光标热点的 x 坐标。 如果此结构定义了图标，则热点始终位于图标的中心，并且忽略此成员。/// </summary>public Int32 xHotspot;/// <summary>/// 光标热点的 y 坐标。 如果此结构定义了图标，则热点始终位于图标的中心，并且忽略此成员。/// </summary>public Int32 yHotspot;/// <summary>/// 单色掩码 位图图标的句柄。/// </summary>public IntPtr hbmMask;/// <summary>/// 图标颜色 位图的句柄。/// </summary>public IntPtr hbmColor;}/// <summary>/// 全局游标信息/// </summary>[StructLayout(LayoutKind.Sequential)]struct CURSORINFO{/// <summary>/// 结构大小（以字节为单位）。 调用方必须将此设置为 sizeof(CURSORINFO)。/// </summary>public Int32 cbSize;/// <summary>/// 游标状态。 此参数的取值可为下列值之一：0:光标处于隐藏。1：光标处于显示。2：Windows 8：取消光标。 此标志指示系统未绘制光标，因为用户是通过触摸或笔而不是鼠标提供输入。/// </summary>public Int32 flags;/// <summary>/// 光标的句柄。/// </summary>public IntPtr hCursor;/// <summary>/// 接收光标的屏幕坐标的结构。/// </summary>public Point ptScreenPos;}[Flags()]public enum KeyModifiers{None = 0,Alt = 1,Ctrl = 2,Shift = 4,WindowsKey = 8}class APIHelper{/// <summary>/// 获取与windows环境有关的信息/// </summary>/// <param name="mVal">指定获取信息</param>/// <returns></returns>[DllImport("user32.dll")]public static extern int GetSystemMetrics(int mVal);/// <summary>/// 获取指定图标或者鼠标的一个副本/// </summary>/// <param name="hIcon">欲复制的图标或指针的句柄</param>/// <returns></returns>[DllImport("user32.dll")]public static extern IntPtr CopyIcon(IntPtr hIcon);[DllImport("user32.dll", EntryPoint = "GetCursorInfo")]public static extern bool GetCursorInfo(ref CURSORINFO cInfo);[DllImport("user32.dll", EntryPoint = "GetIconInfo")]public static extern bool GetIconInfo(IntPtr hIcon, out ICONINFO iInfo);[DllImport("kernel32")]public static extern long WritePrivateProfileString(string section, string key, string val, string filePath);[DllImport("kernel32")]public static extern int GetPrivateProfileString(string section, string key, string def, StringBuilder retval, int size, string filePath);/// <summary>/// 热键注册/// </summary>/// <param name="hWnd">要定义热键的窗口的句柄 </param>/// <param name="id">定义热键ID（不能与其它ID重复） </param>/// <param name="fsModifiers">标识热键是否在按Alt、Ctrl、Shift、Windows等键时才会生效 </param>/// <param name="vk">定义热键的内容 </param>/// <returns>如果函数执行成功，返回值不为0。如果函数执行失败，返回值为0。要得到扩展错误信息，调用GetLastError。</returns>[DllImport("user32.dll", SetLastError = true)]public static extern bool RegisterHotKey(IntPtr hWnd, int id, KeyModifiers fsModifiers, Keys vk);/// <summary>/// 热键注销/// </summary>/// <param name="hWnd">要取消热键的窗口的句柄 </param>/// <param name="id">要取消热键的ID </param>/// <returns></returns>[DllImport("user32.dll", SetLastError = true)]public static extern bool UnregisterHotKey(IntPtr hWnd, int id);/// <summary>/// 从INI文件中读取数据/// </summary>/// <param name="filePath">INI文件的全路径</param>/// <param name="rootValue">根节点值，例如根节点[ConnectString]的值为：ConnectString</param>/// <param name="key">根节点下的键</param>/// <param name="defValue">当标记值未设定或不存在时的默认值</param>/// <returns></returns>}
