我的错误
gridlist.h: In constructor ‘GridList::GridList(WINDOW*, int, int, int, int, int)’:
gridlist.h:11:47: error: no matching function for call to ‘Window::Window()’
gridlist.h:11:47: note: candidates are:
window.h:13:3: note: Window::Window(WINDOW*, int, int, int, int, int)
我的代码
GridList(WINDOW *parent = stdscr, int colors = MAG_WHITE, int height = GRIDLIST_HEIGHT, int width = GRIDLIST_WIDTH, int y = 0, int x = 0)
: Window(parent, colors, height, width, y, x) {
this->m_buttonCount = -1;
m_maxButtonsPerRow = ((GRIDLIST_WIDTH)/(BUTTON_WIDTH+BUTTON_SPACE_BETWEEN));
this->m_buttons = new Button *[50];
refresh();
}
我有点不确定它究竟要告诉我什么以及我做错了什么。我正在将正确的变量类型传递给类和正确的参数数量。但是它说我试图在没有参数的情况下调用Window::Window()
。提前感谢您的帮助。
Button类编译得很好,几乎完全一样。
Button(WINDOW *parent = 0, int colors = STD_SCR, int height = BUTTON_WIDTH, int width = BUTTON_HEIGHT, int y = 0, int x = 0)
: Window(parent, colors, height, width, y, x) {
this->refresh();
}
答案 0 :(得分:3)
您的GridList
类的成员变量类型为Window
。由于所有成员(默认情况下未指定)在构造函数的主体之前初始化,你的实际看起来与此类似:
GridList::GridList (...)
: Window(...), m_tendMenu() //<--here's the problem you can't see
您的成员变量是默认初始化的,但您的Window
类没有默认构造函数,因此出现问题。要解决此问题,请在成员初始值设定项中初始化您的成员变量:
GridList::GridList (...)
: Window(...), m_tendMenu(more ...), //other members would be good here, too
你的Button
类工作的原因是因为它没有Window
类型的成员,因此,当它不能被默认初始化时,没有任何内容。
答案 1 :(得分:-2)
为什么只是在初始化列表中调用构造函数?通常你在那里初始化成员变量,所以那里会有类型窗口的成员变量。
GridList(WINDOW *parent = stdscr, int colors = MAG_WHITE,
int height = GRIDLIST_HEIGHT, int width = GRIDLIST_WIDTH, int y = 0, int x = 0)
: m_window(parent, colors, height, width, y, x) { }