#include "graphics.h" void clearmouseclick(int kind);
getmouseclick
, except it does not provide the x and y coordinates of the event. The value of the argument kind may be any of the constants listed above. After calling getmouseclick
, for a particular kind of event, the ismouseclick
will return false for that kind of event until another such event occurs.
The kind
argument to clearmouseclick
is one of these constants from the graphics.h
file:
WM_MOUSEMOVE
WM_LBUTTONDBLCLK
WM_LBUTTONDOWN
WM_LBUTTONUP
WM_MBUTTONDBLCLK
WM_MBUTTONDOWN
WM_MBUTTONUP
WM_RBUTTONDBLCLK
WM_RBUTTONDOWN
WM_RBUTTONUP
The middle mouse button handlers aren't working on my machine. I haven't yet tracked down the reason--it could be a broken mouse or it could be a bug in my programming.
/* mouse example */ #include "graphics.h" void main(void) { const int LIMIT = 10; // Number of clicks to stop program. int maxx, maxy; // Maximum x and y pixel coordinates int count = 0; // Number of mouse clicks 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( ); // 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 " << LIMIT << " times to end."); setcolor(BLUE); divisor = 2; while (count < LIMIT) { triangle(maxx/divisor, maxy/divisor); delay(500); divisor++; if (ismouseclick(WM_LBUTTONDOWN)) { clearmouseclick(WM_LBUTTONDOWN)); count++; } } // Switch back to text mode: closegraph( ); }