117.C language realization Desktop output picture, desktop output text, desktop draw line

By getting the window handle, then getting the window DC, and then drawing

1#include <Windows.h>2#include <stdio.h>3 4 //Desktop Drawing Line5 voidDrawLine ()6 {7     //get the console window8     //hwnd hwnd = Getconsolewindow ();9     //Get OutputTen     //HDC hdc = GetDC (hwnd); One     //Get Desktop Window AHWND hwnd =GetDesktopWindow (); -     //Get Output -HDC HDC =GETWINDOWDC (HWND); theHpen Hpen = CreatePen (Ps_solid,2, RGB (255,255,255)); -SelectObject (hdc, hpen);//Select Pen -      while(1) -     { +LineTo (HDC,Ten,Ten); -Sleep ( -); +LineTo (HDC, -, -); ASleep ( -); atLineTo (HDC, -, -); -Sleep ( -); -LineTo (HDC, -, -); -Sleep ( -); -LineTo (HDC, the, -); -Sleep ( -); inLineTo (HDC, the, the); -     } to      +  -System"Pause"); the } *  $ //display pictures on the desktop or consolePanax Notoginseng voiddrawpic () - { the     //get the console window +     //hwnd hwnd = Getconsolewindow (); A     //Get Output the     //HDC hdc = GetDC (hwnd); +     //Get Desktop Window -HWND hwnd =GetDesktopWindow (); $     //Get Output $HDC HDC =GETWINDOWDC (HWND); -Hbrush brush = CreateSolidBrush (RGB (255,0,0)); -SelectObject (hdc, brush);//Select Pen the      while(1) -     {WuyiRectangle (HDC, -, -, -, -); theSleep ( -); -     } WuSystem"Pause"); -  About } $  - //Desktop Output Text - voidDrawText () - { AHWND hwnd =GetDesktopWindow (); +HDC HDC =GETWINDOWDC (HWND); theSetTextColor (HDC, RGB (0,0,255)); -     //Set Background $SetBkColor (HDC, RGB (255,0,0)); the  the      while(1) the     { the Hfont Hfont, hfontold; -Hfont =Createfonta ( in              the, the              $, the             0, About             0, the Fw_regular, the FALSE, the FALSE, + FALSE, - Gb2312_charset, the Out_default_precis,Bayi Clip_default_precis, the proof_quality, theFixed_pitch |Ff_modern, -             "Official Script" -         ); the          the         //Select Font theHfontold =SelectObject (hdc, hfont); the         //output text in area -         /*RECT Rctext; the rctext.left = ten; the rctext.top = ten; the rctext.right = n;94 rctext.bottom = n; the Drawtexta (hdc, "Desktop text output test", strlen ("Desktop text output test"), &rctext, dt_center);*/ theTextouta (HDC,0,0,"Desktop text output test", strlen ("Desktop text output test")); the SelectObject (hdc, hfontold);98Sleep ( -); About     } - }101 102 voidMain ()103 {104     //drawpic (); the     //drawLine ();106 DrawText ();107System"Pause");108}

117.C language realization Desktop output picture, desktop output text, desktop draw line