c++ - Mouse program in Turbo CPP

Question

I have written a program in turbo cpp, which uses mouse for a basic GUI. I have also written a function that determines if the mouse has been clicked on a certain text displayed at a certain position. Everything works fine on the first run. But when i run the program, a second time a problem arises. Even when the mouse is just passed over an option(not clicking) it gets selected and the next page is displayed. Thanks again for those who answers. I am also attaching the code for mouse functions..

union REGS in,out;
int callmouse()
{
in.x.ax=1;
int86(51,&in,&out);
return 1;
}


void mouseposi(int &xpos,int &ypos,int &click)
{
 in.x.ax=3;
 int86(51,&in,&out);
 click=out.x.bx;                //CLICK ==1,IF LEFT BUTTON PRESSED
 xpos=out.x.cx;                 //CLICK ==2,IF RIGHT BUTTON PRESSED
ypos=out.x.dx;
} 


int mousehide()
{
in.x.ax=2;
int86(51,&in,&out);
return 1;
}


void setposi(int xpos,int ypos)
{                                 
in.x.ax=4;      
in.x.cx=xpos;
in.x.dx=ypos;
int86(51,&in,&out);
}


void restrictmouseptr(int x1,int y1,int x2,int y2)
{
in.x.ax=7;              
in.x.cx=x1;             
in.x.dx=x2;
int86(51,&in,&out);
in.x.ax=8;
in.x.cx=y1;
in.x.dx=y2;
int86(51,&in,&out);
}


 int mouseclick(int x_org,int y_org,char str[], int x_cur, int y_cur, int cl)
{
static int flag=0;
int y_diff=y_cur-y_org;
int x_diff=x_cur-x_org;
if((y_diff>=0 && y_diff<=textheight(str))&&(x_diff>=0 && x_diff<=textwidth(str)))
{
    if(flag==0)
    {   int oldcolor=getcolor();
        setcolor(15);
        outtextxy(x_org,y_org,str);
        setcolor(oldcolor);
        flag=1;
    }
    if(cl!=1)
    return 0;             //RETURNS 0 IF LEFT BUTTON IS NOT PRESSED
    else
    {
        mousehide();
        return 1;        //RETURNS 1 IF X AND Y COORDINATES ARE 
                 //WITHIN THEIR EXTREMITIES.
    }
}
else if(flag==1);
{
      setcolor(11);
      flag=0;
      outtextxy(x_org,y_org,str);
      return 0;
}
}

Answer 1

I do not see the architecture of your program as the important stuff is missing. I would expect you got a list of objects per page with their positions,size,labels,color etc. in form of some arrays of struct and loop through that for booth rendering and mouse handling. Something like this

• Does anyone know of a low level (no frameworks) example of a drag & drop, re-order-able list?

just ignore the VCL stuff TCanvas,Graphics::TBitmap so ignore lines starting with bmp-> or scr-> (or port them into your graphics).

not sure if it helps but I just dig my ancient mine sweep game with partial solver using mouse in Turbo C++. It looks like this:

Here Turbo C++ source for it:

//===========================================================================
//=== Includes: =============================================================
//===========================================================================
#include <stdlib.h>
//===========================================================================
//=== Types: ================================================================
//===========================================================================
typedef unsigned char byte;
typedef unsigned int  word;
typedef unsigned long dword;
//===========================================================================
//=== Headers: ==============================================================
//===========================================================================
void initscr();         // 320*200*256, BW palette
void clrscr();          // clear  scr
void rfsscr();          // vga << scr
void box(word x,word y,word a); // draw box a <0..cfree> at x,y
void boardint();        // init mines, clear board map
void boardprn();        // draw board map
void mouseint();        // init mouse
void mousetst();        // test mouse (x,y,buttons)
void numprn(word x,word y,word n);  // write number n <0..9999> at x,y

void boardtst0(int x,int y,int &n); // sub test count number of mines around
void boardtst(int x,int y);     // test number of mines around if error then boardend;
void boardend();            // game over (lose)
void boardwin();            // game over (win)
int  boardopt0(int x,int y);
void boardopt1(int x,int y,int &c);
int  boardopt2(int x,int y);
void boardopt3(int x,int y,int &c);
void boardopt();            // optimized search
//===========================================================================
//=== Global data: ==========================================================
//===========================================================================
const   c0=25; // used colors
const   c1=30;
const   c2=20;
const   c3=40;
const   c4=34;
const   c5=35;
const   c6=5;
const   cfree=13;

const   boardx=30; // board size
const   boardy=16;
const   minesn=99; // number of mines

const   boardx0=(320-(10*boardx))/2;
const   boardy0=(190-(10*boardy))/2+10;



byte        board[32][20];
byte        mines[32][20];
word far    *pit;

long        xtime0,xtime;
int     flags;


word        scrseg,scrofs;
word        mousex=0,mousey=0,
        mousel=0,mouser=0,
        mousel0=0,mouser0=0,
        mousebx=255,mouseby=255;
byte far    scr[64000],*vga; // 320x200x8bpp backbuffer and VGA screen

byte far    mouset[10][10]= // mouse cursor
        {
        1,1,0,0,0,0,0,0,0,0,
        1,1,1,1,0,0,0,0,0,0,
        1,1,1,1,1,1,0,0,0,0,
        1,1,1,1,0,0,0,0,0,0,
        1,1,1,1,0,0,0,0,0,0,
        1,0,0,1,1,0,0,0,0,0,
        1,0,0,0,1,0,0,0,0,0,
        0,0,0,0,0,0,0,0,0,0,
        0,0,0,0,0,0,0,0,0,0,
        0,0,0,0,0,0,0,0,0,0
        };

byte far    txr[14*100]= // board tiles
        {
        c2,c1,c1,c1,c1,c1,c1,c1,c1,c1,
        c1,c0,c0,c0,c0,c0,c0,c0,c0,c2,
        c1,c0,c0,c0,c5,c5,c0,c0,c0,c2,
        c1,c0,c0,c5,c0,c0,c5,c0,c0,c2,
        c1,c0,c0,c5,c0,c0,c5,c0,c0,c2,
        c1,c0,c0,c5,c0,c0,c5,c0,c0,c2,
        c1,c0,c0,c5,c0,c0,c5,c0,c0,c2,
        c1,c0,c0,c0,c5,c5,c0,c0,c0,c2,
        c1,c0,c0,c0,c0,c0,c0,c0,c0,c2,
        c1,c2,c2,c2,c2,c2,c2,c2,c2,c2,

        c2,c1,c1,c1,c1,c1,c1,c1,c1,c1,
        c1,c0,c0,c0,c0,c0,c0,c0,c0,c2,
        c1,c0,c0,c0,c0,c3,c0,c0,c0,c2,
        c1,c0,c0,c0,c3,c3,c0,c0,c0,c2,
        c1,c0,c0,c0,c0,c3,c0,c0,c0,c2,
        c1,c0,c0,c0,c0,c3,c0,c0,c0,c2,
        c1,c0,c0,c0,c0,c3,c0,c0,c0,c2,
        c1,c0,c0,c0,c3,c3,c3,c0,c0,c2,
        c1,c0,c0,c0,c0,c0,c0,c0,c0,c2,
        c1,c2,c2,c2,c2,c2,c2,c2,c2,c2,

        c2,c1,c1,c1,c1,c1,c1,c1,c1,c1,
        c1,c0,c0,c0,c0,c0,c0,c0,c0,c2,
        c1,c0,c0,c0,c3,c3,c0,c0,c0,c2,
        c1,c0,c0,c3,c0,c0,c3,c0,c0,c2,
        c1,c0,c0,c0,c0,c0,c3,c0,c0,c2,
        c1,c0,c0,c0,c3,c3,c0,c0,c0,c2,
        c1,c0,c0,c3,c0,c0,c0,c0,c0,c2,
        c1,c0,c0,c3,c3,c3,c3,c0,c0,c2,
        c1,c0,c0,c0,c0,c0,c0,c0,c0,c2,
        c1,c2,c2,c2,c2,c2,c2,c2,c2,c2,

        c2,c1,c1,c1,c1,c1,c1,c1,c1,c1,
        c1,c0,c0,c0,c0,c0,c0,c0,c0,c2,
        c1,c0,c0,c0,c3,c3,c0,c0,c0,c2,
        c1,c0,c0,c4,c0,c0,c3,c0,c0,c2,
        c1,c0,c0,c0,c0,c3,c0,c0,c0,c2,
        c1,c0,c0,c0,c0,c0,c3,c0,c0,c2,
        c1,c0,c0,c4,c0,c0,c3,c0,c0,c2,
        c1,c0,c0,c0,c3,c3,c0,c0,c0,c2,
        c1,c0,c0,c0,c0,c0,c0,c0,c0,c2,
        c1,c2,c2,c2,c2,c2,c2,c2,c2,c2,

        c2,c1,c1,c1,c1,c1,c1,c1,c1,c1,
        c1,c0,c0,c0,c0,c0,c0,c0,c0,c2,
        c1,c0,c0,c0,c3,c0,c0,c0,c0,c2,
        c1,c0,c0,c0,c3,c0,c0,c0,c0,c2,
        c1,c0,c0,c3,c0,c0,c0,c0,c0,c2,
        c1,c0,c0,c3,c0,c3,c0,c0,c0,c2,
        c1,c0,c0,c3,c3,c3,c3,c0,c0,c2,
        c1,c0,c0,c0,c0,c3,c0,c0,c0,c2,
        c1,c0,c0,c0,c0,c0,c0,c0,c0,c2,
        c1,c2,c2,c2,c2,c2,c2,c2,c2,c2,

        c2,c1,c1,c1,c1,c1,c1,c1,c1,c1,
        c1,c0,c0,c0,c0,c0,c0,c0,c0,c2,
        c1,c0,c0,c3,c3,c3,c3,c0,c0,c2,
        c1,c0,c0,c3,c0,c0,c0,c0,c0,c2,
        c1,c0,c0,c3,c3,c3,c0,c0,c0,c2,
        c1,c0,c0,c0,c0,c0,c3,c0,c0,c2,
        c1,c0,c0,c3,c0,c0,c3,c0,c0,c2,
        c1,c0,c0,c0,c3,c3,c0,c0,c0,c2,
        c1,c0,c0,c0,c0,c0,c0,c0,c0,c2,
        c1,c2,c2,c2,c2,c2,c2,c2,c2,c2,

        c2,c1,c1,c1,c1,c1,c1,c1,c1,c1,
        c1,c0,c0,c0,c0,c0,c0,c0,c0,c2,
        c1,c0,c0,c0,c3,c3,c4,c0,c0,c2,
        c1,c0,c0,c3,c0,c0,c0,c0,c0,c2,
        c1,c0,c0,c3,c3,c3,c0,c0,c0,c2,
        c1,c0,c0,c3,c0,c0,c3,c0,c0,c2,
        c1,c0,c0,c3,c0,c0,c3,c0,c0,c2,
        c1,c0,c0,c0,c3,c3,c0,c0,c0,c2,
        c1,c0,c0,c0,c0,c0,c0,c0,c0,c2,
        c1,c2,c2,c2,c2,c2,c2,c2,c2,c2,

        c2,c1,c1,c1,c1,c1,c1,c1,c1,c1,
        c1,c0,c0,c0,c0,c0,c0,c0,c0,c2,
        c1,c0,c0,c3,c3,c3,c3,c0,c0,c2,
        c1,c0,c0,c0,c0,c0,c3,c0,c0,c2,
        c1,c0,c0,c0,c0,c3,c0,c0,c0,c2,
        c1,c0,c0,c0,c0,c3,c0,c0,c0,c2,
        c1,c0,c0,c0,c3,c0,c0,c0,c0,c2,
        c1,c0,c0,c0,c3,c0,c0,c0,c0,c2,
        c1,c0,c0,c0,c0,c0,c0,c0,c0,c2,
        c1,c2,c2,c2,c2,c2,c2,c2,c2,c2,

        c2,c1,c1,c1,c1,c1,c1,c1,c1,c1,
        c1,c0,c0,c0,c0,c0,c0,c0,c0,c2,
        c1,c0,c0,c0,c3,c3,c0,c0,c0,c2,
        c1,c0,c0,c3,c0,c0,c3,c0,c0,c2,
        c1,c0,c0,c0,c3,c3,c0,c0,c0,c2,
        c1,c0,c0,c3,c0,c0,c3,c0,c0,c2,
        c1,c0,c0,c3,c0,c0,c3,c0,c0,c2,
        c1,c0,c0,c0,c3,c3,c0,c0,c0,c2,
        c1,c0,c0,c0,c0,c0,c0,c0,c0,c2,
        c1,c2,c2,c2,c2,c2,c2,c2,c2,c2,

        c2,c1,c1,c1,c1,c1,c1,c1,c1,c1,
        c1,c0,c0,c0,c0,c0,c0,c0,c0,c2,
        c1,c0,c0,c0,c3,c3,c0,c0,c0,c2,
        c1,c0,c0,c3,c0,c0,c3,c0,c0,c2,
        c1,c0,c0,c0,c3,c3,c3,c0,c0,c2,
        c1,c0,c0,c0,c0,c0,c3,c0,c0,c2,
        c1,c0,c0,c4,c0,c0,c3,c0,c0,c2,
        c1,c0,c0,c0,c3,c3,c0,c0,c0,c2,
        c1,c0,c0,c0,c0,c0,c0,c0,c0,c2,
        c1,c2,c2,c2,c2,c2,c2,c2,c2,c2,

        c2,c1,c1,c1,c1,c1,c1,c1,c1,c1,
        c1,c0,c0,c0,c0,c0,c0,c0,c0,c2,
        c1,c0,c0,c6,c6,c0,c0,c0,c0,c2,
        c1,c0,c0,c6,c6,c6,c6,c0,c0,c2,
        c1,c0,c0,c6,c6,c6,c6,c0,c0,c2,
        c1,c0,c0,c6,c0,c6,c6,c0,c0,c2,
        c1,c0,c0,c6,c0,c0,c0,c0,c0,c2,
        c1,c0,c0,c6,c0,c0,c0,c0,c0,c2,
        c1,c0,c0,c0,c0,c0,c0,c0,c0,c2,
        c1,c2,c2,c2,c2,c2,c2,c2,c2,c2,

        c2,c1,c1,c1,c1,c1,c1,c1,c1,c1,
        c1,c0,c0,c0,c0,c0,c0,c0,c0,c2,
        c1,c0,c0,c0,c0,c0,c0,c0,c0,c2,
        c1,c0,c0,c0,c6,c6,c0,c0,c0,c2,
        c1,c0,c0,c6,c6,c6,c6,c0,c0,c2,
        c1,c0,c0,c6,c6,c6,c6,c0,c0,c2,
        c1,c0,c0,c0,c6,c6,c0,c0,c0,c2,
        c1,c0,c0,c0,c0,c0,c0,c0,c0,c2,
        c1,c0,c0,c0,c0,c0,c0,c0,c0,c2,
        c1,c2,c2,c2,c2,c2,c2,c2,c2,c2,

        c2,c1,c1,c1,c1,c1,c1,c1,c1,c1,
        c1,c0,c0,c0,c0,c0,c0,c0,c0,c2,
        c1,c0,c6,c0,c0,c0,c0,c6,c0,c2,
        c1,c0,c0,c6,c0,c0,c6,c0,c0,c2,
        c1,c0,c0,c0,c6,c6,c0,c0,c0,c2,
        c1,c0,c0,c0,c6,c6,c0,c0,c0,c2,
        c1,c0,c0,c6,c0,c0,c6,c0,c0,c2,
        c1,c0,c6,c0,c0,c0,c0,c6,c0,c2,
        c1,c0,c0,c0,c0,c0,c0,c0,c0,c2,
        c1,c2,c2,c2,c2,c2,c2,c2,c2,c2,

        c2,c1,c1,c1,c1,c1,c1,c1,c1,c1,
        c1,c0,c0,c0,c0,c0,c0,c0,c0,c2,
        c1,c0,c0,c0,c0,c0,c0,c0,c0,c2,
        c1,c0,c0,c0,c0,c0,c0,c0,c0,c2,
        c1,c0,c0,c0,c0,c0,c0,c0,c0,c2,
        c1,c0,c0,c0,c0,c0,c0,c0,c0,c2,
        c1,c0,c0,c0,c0,c0,c0,c0,c0,c2,
        c1,c0,c0,c0,c0,c0,c0,c0,c0,c2,
        c1,c0,c0,c0,c0,c0,c0,c0,c0,c2,
        c1,c2,c2,c2,c2,c2,c2,c2,c2,c2
        };
//===========================================================================
//=== Subroutines: ==========================================================
//===========================================================================
void initscr()
    {
    dword   h,l;
    int i;
    vga=(byte far*)0x0A0000000;
    h=(unsigned long)scr; l=h;
    l=l & 65535;
    h=h >> 16;
    scrseg=h;
    scrofs=l;
    asm {
        mov ax,0x0013
        int 0x10
        }
    for (i=0;i<256;i++) // set color palette to grayscale
    asm {
        mov dx,0x03C8
        mov ax,i
        out dx,al
        mov dx,0x03C9
        mov ax,i
        out dx,al
        out dx,al
        out dx,al
        }
    }
//===========================================================================
void clrscr()
    {
    asm {
        pusha
        push    es
        mov di,scrofs
        mov es,scrseg
        mov ax,0x1313
        mov cx,32000
        rep stosw
        pop es
        popa
        }
    }
//===========================================================================
void rfsscr()
    {
    asm {
        pusha
        push    ds
        push    es
        mov di,0
        mov si,scrofs
        mov ds,scrseg
        mov ax,0xA000
        mov es,ax
        mov cx,32000
        rep movsw
        pop es
        pop ds
        popa
        }
    }
//===========================================================================
void box(word x,word y,word a)
    {
    word    b;
    a=a*100;
    b=x+320*y;
    for (y=0;y<10;y++)
        {
        for (x=0;x<10;x++) scr[b+x]=txr[a+x];
        b+=320;
        a+=10;
        }
    }
//===========================================================================
void boardint()
    {
    word i,x,y;
    for (y=0;y<boardy;y++)
    for (x=0;x<boardx;x++)
        {
        board[x][y]=cfree;
        mines[x][y]=0;
        }
    randomize();
    for (i=0;i<minesn;i++)
        {
        x=random(boardx);
        y=random(boardy);
        if (mines[x][y]) i--;
        else mines[x][y]=1;
        }
    }
//==============