如何在 file_x.h 和 file_x.cpp 中创建一个主类,然后在 file_x、file_y.h 和 file_y.cpp 中创建一个派生类
我已经尝试了很多事情,但没有任何好的结果,你能给我举一个例子吗?两个类的构造函数、变量和两个类中的常规函数?
我在 window.h (主类标题)中有这个:
#ifndef WINDOW_H_
#define WINDOW_H_
#include <string>
#include <vector>
#include "SDL/SDL.h"
#include "SDL/SDL_ttf.h"
#include "../../utils/event.h"
#include "../../utils/button.h"
using namespace std;
class bwindow{
protected:
SDL_Surface* up_bar;
SDL_Surface* content;
SDL_Surface* to_blit;
SDL_Surface* text;
vector <button*> botns;
string name;
int x;
int y;
bool pressed;
int sx;
int sy;
public:
bwindow(string,int,int,int,int,int*,int*);
void graphic_update(SDL_Surface*);
void logic_update(events*);
~bwindow();
string get_name();
};
#endif /* WINDOW_H_ */
这在 window.cpp(主类文件)中:
#include <string>
#include <vector>
#include <iostream>
#include "SDL/SDL.h"
#include "SDL/SDL_gfxPrimitives.h"
#include "SDL/SDL_ttf.h"
#include "../../utils/SDL_functions.h"
#include "../../utils/event.h"
#include "../../extra_data/extra_data.h"
#include "window.h"
using namespace std;
bwindow::bwindow(string title,int xp,int yp,int w,int h,int a[], int b[]){
//seting variables
x = xp;
y = yp;
sx = x;
sy = y;
name = title;
pressed = false;
//seting masks
Uint32 rmask = 0x00000000;
Uint32 gmask = 0x00000000;
Uint32 bmask = 0x00000000;
Uint32 amask = 0x00000000;
//creating up_bar
up_bar = SDL_CreateRGBSurface(SDL_SWSURFACE, w, 20, 32,rmask, gmask, bmask, amask);
SDL_FillRect( up_bar, &up_bar->clip_rect, SDL_MapRGB( up_bar->format, 0xFF, 0xFF, 0xFF ) );
boxRGBA(up_bar ,0, 0, w,20,a[0],a[1],a[2],a[3]);
//creating content area
content = SDL_CreateRGBSurface(SDL_SWSURFACE, w, h-30, 32,rmask, gmask, bmask, amask);
boxRGBA(content,0, 0,w, h - 25,b[0],b[1],b[2], b[3]);
//adding borders
sdlf::add_border(up_bar,1,1,1,1,0,0,0,255);
sdlf::add_border(content,1,1,1,1,0,0,0,255);
//adding the up-text
SDL_Color textColor = { 0 , 0 ,0 };
TTF_Font *font;
font = fonts::load_john_han(15);
text = TTF_RenderText_Solid(font,title.c_str(),textColor);
apply_surface(20,5,text,up_bar);
//creating final surface
to_blit = SDL_CreateRGBSurface(SDL_SWSURFACE, w, h, 32,rmask, gmask, bmask, amask);
}
void bwindow::graphic_update(SDL_Surface* screen){
SDL_FillRect( to_blit, &to_blit->clip_rect, SDL_MapRGB( to_blit->format, 0xFF, 0xFF, 0xFF ) );
apply_surface(0,0, up_bar, to_blit);
apply_surface(0,20,content,to_blit);
apply_surface(x,y,to_blit,screen);
}
void bwindow::logic_update(events* evs){
mouse m = evs->get_mouse();
bool condition1 = m.x > x and m.x < x + up_bar->w;
bool condition2 = m.y > y and m.y < y + up_bar->h;
bool condition3 = m.left;
if (condition1 and condition2){
if (condition3 and pressed == false){
pressed = true;
sx = m.x - x;
sy = m.y - y;
}else if (not(condition3)){
pressed = false;
}
}
if (condition3 and pressed == true){
x = (m.x - sx) ;
y = (m.y - sy) ;
}
}
string bwindow::get_name(){
return name;
}
bwindow::~bwindow(){
}
这在 window_types.h(派生类头文件)中:
#ifndef WINDOW_TYPES_H_
#define WINDOW_TYPES_H_
#include <string>
#include <vector>
#include "window.h"
using namespace std;
namespace windows{
class message_window : public bwindow{
private:
vector <string> message;
string title;
public:
message_window();
void start(string,vector<string>,int);
void test();
};
}
#endif /* WINDOW_TYPES_H_ */
这在window_types.cpp中(我得到一个错误“没有匹配函数调用'bwindow :: bwindow()”):
#include <string>
#include <vector>
#include "../../utils/utilsf.h"
#include "window_types.h"
using namespace std;
//HERE THE ERROR
windows::message_window::message_window(){
}
void windows::message_window::start(string title,vector <string> content,int s){
int yp = 200;
int xp = 300;
int w = 100;
int h = 50;
int a[4];
int b[4];
a[0] = utilsf::randrange(0,256,s);
a[1] = utilsf::randrange(0,256,s);
a[2] = 200;
a[3] = 255;
b[0] = 200;
b[1] = utilsf::randrange(0,256,s);
b[2] = utilsf::randrange(0,256,s);
b[3] = 255;
bwindow(title,xp,yp,w,h,a,b);
}
void windows::message_window::test(){
}