// 事件相应函数
private IntPtr MainWindowProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
switch (msg)
{
case Win32.WmHotkey:
int sid = wParam.ToInt32();
if (sid == Win32.GlobalAddAtom("Alt-C"))
{
MouseXY.GetCursorPos(out Mouse);
IntPtr hdc = Win32.GetDC(new IntPtr(0));
System.Drawing.Point p = new System.Drawing.Point(Mouse.X, Mouse.Y);
// 一个颜色通道为8为二进制，通过二进制并且运算和位移截取颜色并进行处理
int c = Win32.GetPixel(hdc, p), r = c & 0xFF, g = (c & 0xFF00) >> 8, b = (c & 0xFF0000) >> 16;
string clrstr = "#" + ParseColorToString(r) + ParseColorToString(g) + ParseColorToString(b);
//Console.WriteLine(Convert.ToString(c, 16));
//Console.WriteLine(Convert.ToString(c & 0xFFffffff, 16));
//Console.WriteLine(clrstr);
ListBoxItem item = NewColorItem(clrstr);
ColorList.Items.Add(item);
ColorText.Text = clrstr;
ColorList.ScrollIntoView(item);
System.Windows.Forms.Clipboard.SetDataObject(clrstr);
}
handled = true;
break;
}
return(IntPtr.Zero);
}
// 截取屏幕从截取的屏幕中读取颜色
public void GetScreenSnapshot(object sender = null, EventArgs e = null)
{
try {
DateTime now = DateTime.Now;
var bitmap = new Bitmap(10, 10, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
using (Graphics memoryGrahics = Graphics.FromImage(bitmap))
{
MouseXY.GetCursorPos(out Mouse);
memoryGrahics.CopyFromScreen(Mouse.X - 5, Mouse.Y - 5, 0, 0, bitmap.Size, CopyPixelOperation.SourceCopy);
}
MemoryStream ms = new MemoryStream();
bitmap.Save(ms, ImageFormat.Bmp);
byte[] bytes = ms.GetBuffer(); //byte[] bytes= ms.ToArray(); 这两句都可以
ms.Close();
//Convert it to BitmapImage
BitmapImage image = new BitmapImage();
image.BeginInit();
image.StreamSource = new MemoryStream(bytes);
image.EndInit();
MyImage.Source = image;
} catch (Exception) {
Console.WriteLine("-----------------截图错误----------------");
}
}