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c:graphics.h:setmousequeuestatus

setmousequeuestatus

Syntax of setmousequeuestatus

#include "graphics.h"
voud setmousequeuestatus(int kind, bool status=true);
 

Description of setmousequeuestatus

The setmousequeuestatus function is available in the winbgim
implementation of BGI graphics. This function controls whether mouse
events of a particular kind are queued for processing. If the status
parameter is false, then mouse events of the specified kind are not
queued. This means that each time a mouse event of that kind occurs, any
previous events of the same kind are deleted. If the status parameter is
true, then mouse events of the specified kind are queued, and each call
to getmouseclick returns the details about the event at the front of the
queue.
When a window first opens, queuing is turned off for all events.
  See also
clearmouseclick
ismouseclick
getmouseclick
  Example
/* mouse example */
#include
#include "graphics.h"
using namespace std;
 
int 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);
    setmousequeuestatus(WM_LBUTTONDOWN);
    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 several times!");
    setcolor(BLUE);
    divisor = 2;
    while (!ismouseclick(WM_LBUTTONDOWN))
    {
  delay(5000); // Five second delay, so there might be a several
clicks
    }
 
    while (ismouseclick(WM_LBUTTONDOWN))
    {
  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 setmousequeuestatus ====
<code c>
/* mouse example */
#include
#include "graphics.h"
using namespace std;
 
int 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);
    setmousequeuestatus(WM_LBUTTONDOWN);
    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 several times!");
    setcolor(BLUE);
    divisor = 2;
    while (!ismouseclick(WM_LBUTTONDOWN))
    {
  delay(5000); // Five second delay, so there might be a several
clicks
    }
 
    while (ismouseclick(WM_LBUTTONDOWN))
    {
  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 setmousequeuestatus example

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c/graphics.h/setmousequeuestatus.txt · Last modified: 2015/05/06 23:06 (external edit)

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