The screen color picker produced by C #

1 using System;
2 using System.Collections.Generic;
3 using System.ComponentModel;
4 using System.Data;
5 using System.Drawing;
6 using System.Linq;
7 using System.Text;
8 using System.Windows.Forms;
9 using System.Runtime.InteropServices;
10
Namespace Getscrcolor
12 {
public partial class Form1:form
14 {
Public Form1 ()
16 {
InitializeComponent ();
18}
19
private bool flag = FALSE;
21st
public struct POINTAPI
23 {
public UINT X;
public uint Y;
26}
27
public class WinInfo
29 {
[DllImport ("User32.dll")]
public static extern UINT Windowfrompoint
32 (
X_point UINT,
Y_point UINT
35);
36
Panax Notoginseng [DllImport ("User32.dll")]
GetCursorPos public static extern bool
39 (
Ref POINTAPI P
41);
42
[DllImport ("User32.dll")]
ScreenToClient public static extern uint
45 (
A. UINT hwnd,
Ref POINTAPI P
48);
49
[DllImport ("User32.dll")]
Wuyi public static extern uint GetDC
52 (
(+) UINT HWND
54);
55
[DllImport ("Gdi32.dll")]
GetPixel public static extern uint
58 (
A-I-uint HDC,
A uint X,
All-in-a-uint y
62);
63
[DllImport ("User32.dll")]
ReleaseDC public static extern uint
66 (
An HWND uint,
-----UINT HDC
69);
70}
71
Form1_Load private void (object sender, EventArgs e)
73 {
Initpos (0,0,false);
The screen s = screen.primaryscreen;
Rectangle r = s.bounds;
iwidth int = r.width;
iheight int = r.height;
79//Create a bitmap as large as the screen
Image img = new Bitmap (iwidth,iheight);
81//Create a Graphics object from an object that inherits from the image class
The graphics.fromimage Graphics g = (IMG);
83//Crawl Full screen
G.copyfromscreen (new point (0, 0), new Point (0, 0), New Size (iwidth, iheight));
this. WindowState = formwindowstate.maximized;
this. BackgroundImage = img;
87}
88
Form1_mousemove private void (object sender, MouseEventArgs e)
90 {
Pointapi Papi = new Pointapi ();
Wininfo.getcursorpos (ref PAPI);
V_hwnd uint = Wininfo.windowfrompoint (papi.x, PAPI.Y);
94 UINT V_DC = WININFO.GETDC (V_hwnd);
Wininfo.screentoclient (V_hwnd, ref PAPI);
V_color uint = Wininfo.getpixel (V_DC, papi.x, PAPI.Y);
97
98 UINT v_red, V_green, V_blue;
v_red = V_color & 0xFF;
V_green = (V_color & 0xff00)/256;
101 V_blue = (V_color & 0xff0000)/65536;
102
103 This.txtRGB.Text = "#" +v_red.tostring ("X"). PadLeft (2, ' 0 ') + v_green.tostring ("x"). PadLeft (2, ' 0 ') + v_blue.tostring ("x"). PadLeft (2, ' 0 ');
104 This.txtRGBDesc.Text = v_red.tostring ("D") + "" "+ v_green.tostring (" D ") +" "+ v_blue.tostring (" D ");
This.txtShow.BackColor = Color.FromArgb ((int) v_red, (int) v_green, (int) v_blue);
106 Wininfo.releasedc (V_hwnd, V_DC);
107}
108
109 private void Initpos (int x,int y,bool bflag)
110 {
111 Panel1. left = x;
Panel1. Top = y;
113 flag = Bflag;
114}
115
116
117 private void Panel1_mouseenter (object sender, EventArgs e)
118 {
119 if (!flag)
120 {
121 Initpos (this. Width-panel1. Width, 0, true);
122}
123 Else
124 {
Initpos (0, 0, false);
126}
127}
128
129 private void Form1_keydown (object sender, KeyEventArgs e)
130 {
131 if (E.keycode = = Keys.escape)
132 {
133 this. Close ();
134}
135}
136
137}
138}
139

The screen color picker produced by C #