Je ne suis pas sûr de la version de graphics.h vous arrive d'avoir, mais il y a des fonctions getmousey
, getmousey
, clearmouseclick
et getmouseclick
. See this pour une documentation qui peut fonctionner pour vous.
Il apparaît que vous pouvez utiliser registermousehandler
et une fonction de rappel pour effectuer un certain niveau de programmation basée sur les événements. Voici un exemple du document que je vous ai envoyé.
// The click_handler will be called whenever the left mouse button is
// clicked. It checks copies the x,y coordinates of the click to
// see if the click was on a red pixel. If so, then the boolean
// variable red_clicked is set to true. Note that in general
// all handlers should be quick. If they need to do more than a little
// work, they should set a variable that will trigger the work going,
// and then return.
bool red_clicked = false;
void click_handler(int x, int y)
{
if (getpixel(x,y) == RED)
red_clicked = true;
}
// Call this function to draw an isosoles triangle with the given base and
// height. The triangle will be drawn just above the botton of the screen.
void triangle(int base, int height)
{
int maxx = getmaxx();
int maxy = getmaxy();
line(maxx/2 - base/2, maxy - 10, maxx/2 + base/2, maxy - 10);
line(maxx/2 - base/2, maxy - 10, maxx/2, maxy - 10 - height);
line(maxx/2 + base/2, maxy - 10, maxx/2, maxy - 10 - height);
}
void main(void)
{
int maxx, maxy; // Maximum x and y pixel coordinates
int divisor; // Divisor for the length of a triangle side
// Put the machine into graphics mode and get the maximum coordinates:
initwindow(450, 300);
maxx = getmaxx();
maxy = getmaxy();
// Register the function that handles a left mouse click
registermousehandler(WM_LBUTTONDOWN, click_handler);
// Draw a white circle with red inside and a radius of 50 pixels:
setfillstyle(SOLID_FILL, RED);
setcolor(WHITE);
fillellipse(maxx/2, maxy/2, 50, 50);
// Print a message and wait for a red pixel to be double clicked:
settextstyle(DEFAULT_FONT, HORIZ_DIR, 2);
outtextxy(20, 20, "Left click in RED to end.");
setcolor(BLUE);
red_clicked = false;
divisor = 2;
while (!red_clicked)
{
triangle(maxx/divisor, maxy/divisor);
delay(500);
divisor++;
}
cout << "The mouse was clicked at: ";
cout << "x=" << mousex();
cout << " y=" << mousey() << endl;
// Switch back to text mode:
closegraph();
}
je ne suis pas sûr de la version de graphics.h j'utilise, mais sont thre ces fuctions getmousey définis dans le fichier d'en-tête, et que fait-il? –
thx pour votre aide, je suppose que cela sera utile. –