Question

我想为goocanvasmm文本项设置文本锚点。但我无法让例子运行

Goocanvas::Text::create("Any Text", 0, 0, -1, Goocanvas::ANCHOR_NORTH);

错误：'ANCHOR_NORTH'不是'Goocanvas'的成员

Goocanvas::Text::create("Any Text", 0, 0, -1, Goocanvas::ANCHOR_N);

错误：'ANCHOR_N'不是'Goocanvas'的成员

我不知道这个项目所在的命名空间或子类。有人可以帮忙吗？

Answer 1

枚举器的定义如下：

enum    Goocanvas::AnchorType {

  Goocanvas::ANCHOR_CENTER,

  Goocanvas::ANCHOR_NORTH,

  Goocanvas::ANCHOR_NORTH_WEST,

  Goocanvas::ANCHOR_NORTH_EAST,

  Goocanvas::ANCHOR_SOUTH,

  Goocanvas::ANCHOR_SOUTH_WEST,

  Goocanvas::ANCHOR_SOUTH_EAST,

  Goocanvas::ANCHOR_WEST,

  Goocanvas::ANCHOR_EAST,

  Goocanvas::ANCHOR_N = ANCHOR_NORTH,

  Goocanvas::ANCHOR_NW = ANCHOR_NORTH_WEST,

  Goocanvas::ANCHOR_NE = ANCHOR_NORTH_EAST,

  Goocanvas::ANCHOR_S = ANCHOR_SOUTH,

  Goocanvas::ANCHOR_SW = ANCHOR_SOUTH_WEST,

  Goocanvas::ANCHOR_SE = ANCHOR_SOUTH_EAST,

  Goocanvas::ANCHOR_W = ANCHOR_WEST,

  Goocanvas::ANCHOR_E = ANCHOR_EAST

}

所以你的代码应该工作，除非你做了一些命名空间foo（即use blurb）。尝试直接使用C定义（即ANCHOR_SOUTH_WEST - 无命名空间）。

goocanvasmm文本项目集锚

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