#define _WIN32_WINNT 0x0500 // used for GetConsoleWindow()
#include <windows.h> // used for all windows functions
#include <iostream> // used for cin and cout
#include <cstdlib> // used for system
using std::cout;
using std::cin;
HWND cmd = GetConsoleWindow(); // get handle to console window
HWND hwnd; // handle for window
const char g_szClassName[] = "myWindowClass"; // window class name
HDC hdc = GetDC(NULL); // get handle to device context (for graphics) of entire screen
HBRUSH brush = CreateSolidBrush (RGB(0,0,0)); // black brush
HBRUSH white = CreateSolidBrush (RGB(255,255,255)); // white brush (using this later to create canvases)
HPEN pen = CreatePen(PS_NULL,0,RGB(0,0,0)); // black invisible pen
int r=20; // radius of circle
POINT m; // mouse position
void select() // make console window active (it's a bit stubborn...)
{
RECT rect; // contains left/right/top/bottom
GetWindowRect(cmd, &rect); // get console window's coordinates
SetWindowPos(cmd,HWND_TOP,rect.left,rect.top,rect.right-rect.left,rect.bottom-rect.top,SWP_SHOWWINDOW); // make console window active
}
LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) // random window procedure
{
SelectObject(hdc,brush); // select the current brush
GetCursorPos(&m); // get mouse position
Ellipse(hdc,m.x-r,m.y-r,m.x+r,m.y+r); // draw a circle of radius r at mouse
SelectObject(hdc,pen); // select current pen
Ellipse(hdc,m.x-r,m.y-r,m.x+r,m.y+r); // draw a circle with the pen (annoying black outlines if I don't do this)
}
void changeColour() // change colour of circle
{
ShowWindow(cmd,SW_SHOWNORMAL); // show console window
SetFocus(cmd); // set the focus (input) to console window
int r = -1, g = -1, b = -1; // colours (1 to 255)
while (r < 0 || r > 255)
{
cout << "Red: "; // prompt for red amount
cin >> r; // input red amount
}
while (g < 0 || g > 255)
{
cout << "Green: "; // prompt for green amount
cin >> g; // input green amount
}
while (b < 0 || b > 255)
{
cout << "Blue: "; // prompt for blue amount
cin >> b; // input blue amount
}
system("cls"); // clear screen
ShowWindow(cmd,SW_HIDE); // hide console window
brush = CreateSolidBrush(RGB(r,g,b)); // change the brush to that colour
pen = CreatePen(PS_SOLID,0,RGB(r,g,b)); // change the pen to that colour
}
void changeSize() // change the radius
{
ShowWindow(cmd,SW_SHOWNORMAL); // show console window
SetFocus(cmd); // give console window focus
int size = -1; // new radius
while (size < 0 || size > 50)
{
cout << "Size: "; // prompt for new size
cin >> size; // input new size
system ("cls"); // clear screen
}
r=size; // set radius to equal size
ShowWindow(cmd,SW_HIDE); // hide console window
}
// main function
int WINAPI WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nShowCmd) {
ShowWindow (cmd, SW_HIDE); // hide console window
WNDCLASSEX wc; // windows class
// initialize data members of class
wc.cbSize = sizeof(WNDCLASSEX);
wc.style = 0;
wc.lpfnWndProc = WndProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hInstance;
wc.hIcon = LoadIcon(NULL, IDI_APPLICATION);
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
wc.lpszMenuName = NULL;
wc.lpszClassName = g_szClassName;
wc.hIconSm = LoadIcon(NULL, IDI_APPLICATION);
if(!RegisterClassEx(&wc)) // register class
{
MessageBox(NULL, "Window Registration Failed!", "Error!",
MB_ICONEXCLAMATION | MB_OK);
return 0;
}
// create window
hwnd = CreateWindowEx(
WS_EX_CLIENTEDGE,
g_szClassName,
"The title of my window",
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, CW_USEDEFAULT, 240, 120,
NULL, NULL, hInstance, NULL);
if(hwnd == NULL) // check to make sure window is created
{
MessageBox(NULL, "Window Creation Failed!", "Error!",
MB_ICONEXCLAMATION | MB_OK);
return 0;
}
ShowWindow(hwnd, SW_HIDE); // hide window
UpdateWindow(hwnd);
INPUT move; // move mouse from bottom right to current location
move.type=0; // mouse input
move.mi.dwFlags = MOUSEEVENTF_ABSOLUTE | MOUSEEVENTF_MOVE; // used to give absolute coordinates, not relative
INPUT up; // move mouse button up
up.type=0; // mouse input
up.mi.dwFlags=0x0004; // left button up
INPUT down; // move mouse button down
down.type=0; // mouse input
down.mi.dwFlags=0x0002; // left button down
bool mouse; // used to check whether left button has been released
while(1) // infinite loop
{
if (GetAsyncKeyState (VK_LBUTTON) & 0x8000) // if left button is down
{
if (!mouse) // if it was up before
{
GetCursorPos(&m); // get mouse position
SetCursorPos(GetSystemMetrics(SM_CXSCREEN),GetSystemMetrics(SM_CYSCREEN)); // set cursor to bottom right
SendInput(1,&down,sizeof(down)); // push left button down
move.mi.dx=(m.x * 65535 / GetSystemMetrics(SM_CXSCREEN)); // set the coordinates of move to where mouse was
move.mi.dy=(m.y * 65535 / GetSystemMetrics(SM_CYSCREEN));
SendInput(1,&move,sizeof(move)); // move mouse back (dragging since left button is down)
mouse = true; // button has been pushed down
}
WndProc (hwnd,WM_LBUTTONDOWN,0,0); // call the window procedure (only this executes if the button remains down)
}
if (!(GetAsyncKeyState(VK_LBUTTON) & 0x8000)) // if left mouse button is up
{
mouse = false; // set variable to false so that it will drag from bottom right next press again
}
if (GetAsyncKeyState(0x31) & 0x8000) changeColour(); // if '1' is pressed, change the colour
if (GetAsyncKeyState(0x32) & 0x8000) changeSize(); // if '2' is pressed, change the size
}
return 0;
}
|
Register
Wiki
Blog
Search
Turing
Chat Room
Members
