//This is a drawing program
U0 Doodle()
{
I64 msg_code,i,x1,y1,x2,y2,arg1,arg2,color=BLACK;
CDC *dc=DCAlias;
SettingsPush; //See SettingsPush
Fs->win_inhibit=WIG_TASK_DFT-WIF_SELF_FOCUS-WIF_SELF_BORDER;
AutoComplete;
WinBorder;
WinMax;
DocClear;
DCFill;
do {
msg_code=GetMsg(&arg1,&arg2,
1<<MSG_KEY_DOWN+1<<MSG_MS_L_DOWN+1<<MSG_MS_R_UP);
switch (msg_code) {
case MSG_MS_R_UP:
i=PopUpColor;
if (i>=0) color=i;
break;
case MSG_MS_L_DOWN:
x1=arg1; y1=arg2;
x2=arg1; y2=arg2;
dc->color=ROP_XOR+color^TRANSPARENT;
dc->thick=7;
do {
GrLine3(dc,x1,y1,0,x2,y2,0);
msg_code=GetMsg(&arg1,&arg2,1<<MSG_MS_L_UP+1<<MSG_MS_MOVE);
GrLine3(dc,x1,y1,0,x2,y2,0);
x2=arg1; y2=arg2;
} while (msg_code!=MSG_MS_L_UP);
GrLine3(dc,x1,y1,0,x2,y2,0);
break;
case MSG_KEY_DOWN:
break;
}
} while (msg_code!=MSG_KEY_DOWN || !arg1);
GetMsg(,,1<<MSG_KEY_UP);
DCFill;
DCDel(dc);
SettingsPop;
}
Doodle; //Execute when #included