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c:graphics.h:getmouseclick

getmouseclick

Syntax of getmouseclick

#include "graphics.h"
voud getmouseclick(int kind, int& x, int& y);
 

Description of getmouseclick

The getmouseclick function is available in the winbgim implementation of
BGI graphics. This function sets x and y to the pixel coordinates of an
unprocessed event of the specified kind. If there is no such event, then
the function sets both x and y to -1. 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 getmouseclick is one of these constants from the
graphics.h file:
  WM_MOUSEMOVE
if you want to detect a mouse movement
  WM_LBUTTONDBLCLK
...detect when the left mouse button is double clicked
  WM_LBUTTONDOWN
...detect when the left mouse button is clicked down
  WM_LBUTTONUP
...detect when the left mouse button is released up
  WM_MBUTTONDBLCLK
...detect when the middle mouse button is double clicked
  WM_MBUTTONDOWN
...detect when the middle mouse button is clicked down
  WM_MBUTTONUP
...detect when the middle mouse button is released up
  WM_RBUTTONDBLCLK
...detect when the right mouse button is double clicked
  WM_RBUTTONDOWN
...detect when the right mouse button is clicked down
  WM_RBUTTONUP
...detect when the right mouse button is released up
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.
Note: Normally, getmouseclick returns the coordinates of the most recent
event of the requested kind. If you want mouse clicks of a particular
kind to be queued for processing, then call setmousequeuestatus.
  See also
clearmouseclick
ismouseclick
setmousequeuestatus
  Example
/* mouse example */
#include "graphics.h"
 
void main(void)
{
    int maxx, maxy;  // Maximum x and y pixel coordinates
    int x, y;  // Coordinates of the mouse click
    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 in to end.");
    setcolor(BLUE);
    divisor = 2;
    while (!ismouseclick(WM_LBUTTONDOWN))
    {
  triangle(maxx/divisor, maxy/divisor);
  delay(500);
  divisor++;
    }
 
    getmouseclick(WM_LBUTTONDOWN, x, y);
    cout << "The mouse was clicked at: ";
    cout << "x=" << x;
    cout << " y=" << y << endl;
 
    // Switch back to text mode:
    closegraph( );
}
 
 
 
 
==== Example of getmouseclick ====
<code c>
/* mouse example */
#include "graphics.h"
 
void main(void)
{
    int maxx, maxy;  // Maximum x and y pixel coordinates
    int x, y;  // Coordinates of the mouse click
    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 in to end.");
    setcolor(BLUE);
    divisor = 2;
    while (!ismouseclick(WM_LBUTTONDOWN))
    {
  triangle(maxx/divisor, maxy/divisor);
  delay(500);
  divisor++;
    }
 
    getmouseclick(WM_LBUTTONDOWN, x, y);
    cout << "The mouse was clicked at: ";
    cout << "x=" << x;
    cout << " y=" << y << endl;
 
    // Switch back to text mode:
    closegraph( );
}

See also

output of getmouseclick example

  no output of example at the moment
  do not hesitate and add it...  
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c/graphics.h/getmouseclick.txt · Last modified: 2015/05/06 23:06 (external edit)

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