Arduino 1.6.3没有匹配功能可调用

Question

Trying to create some inline helper classes for then drawing to display. Wrote some code this summer and then it compiled, now when running latest arduino it doesn't.

Error:

tmp.ino: In constructor 'Image::Image(Rectangle, String, String, String, String, String, String, String, String, String, String)':
tmp.ino:24:187: error: no matching function for call to 'Rectangle::Rectangle()'
tmp.ino:24:187: note: candidates are:
tmp.ino:11:5: note: Rectangle::Rectangle(int, int, int, int)
tmp.ino:11:5: note:   candidate expects 4 arguments, 0 provided
tmp.ino:3:7: note: Rectangle::Rectangle(const Rectangle&)
tmp.ino:3:7: note:   candidate expects 1 argument, 0 provided
Error compiling.

Here's an example:

class Rectangle {
  private:
  public:
    int x;
    int y;
    int width;
    int height;

    Rectangle(int ix, int iy, int iwidth, int iheight) {
      x = ix;
      y = iy;
      width = iwidth;
      height = iheight;
    }
};

class Image {
  private:
  public:
    Rectangle bounds;
    String images[10];
    Image(Rectangle s_bounds, String s1, String s2 = "", String s3 = "", String s4 = "", String s5 = "", String s6 = "", String s7 = "", String s8 = "", String s9 = "", String s10 = "") {
      bounds = s_bounds;

      images[0] = s1;
      images[1] = s2;
      images[2] = s3;
      images[3] = s4;
      images[4] = s5;
      images[5] = s6;
      images[6] = s7;
      images[7] = s8;
      images[8] = s9;
      images[9] = s10;

    }
    void UpdatePosition( int s_x, int s_y ) {
      bounds.x = s_x;
      bounds.y = s_y;
    }
};


void setup() {
  // put your setup code here, to run once:
  Rectangle rect = Rectangle(0,0,200,29);
  rect.x = 20;

  Image img = Image(Rectangle(0,0,10,10), "img.RAW");
}

void loop() {
  // put your main code here, to run repeatedly:

}

...

Is there some changes for this in latest arduino. When trying to create a simple rectangle.

Error:

tmp.ino:20:1: error: 'rect' does not name a type
Error compiling.

Code:

class Rectangle {
  private:
  public:
    int x;
    int y;
    int width;
    int height;

    Rectangle(int ix, int iy, int iwidth, int iheight) {
      x = ix;
      y = iy;
      width = iwidth;
      height = iheight;
    }
};

Rectangle rect = Rectangle(0,0,200,29);
rect.x = 20;

void setup() {
}

void loop() {
}

Answer 1

You have a Rectangle as part of your Image class, and aren't constructing it in your initialization list, so it defaults to getting default constructed, and you don't have a default constructor.

You need to initialize your Rectangle with the one passed in inside the initialization list:

Image(Rectangle s_bounds, String s1, String s2 = "", String s3 = "", String s4 = "", String s5 = "", String s6 = "", String s7 = "", String s8 = "", String s9 = "", String s10 = "")
 : bounds(s_bounds)
{
  images[0] = s1;
  images[1] = s2;
  images[2] = s3;
  images[3] = s4;
  images[4] = s5;
  images[5] = s6;
  images[6] = s7;
  images[7] = s8;
  images[8] = s9;
  images[9] = s10;

}

Your second problem seems to be because you are trying to write code in the global namespace, outside of a function, which isn't valid. It compiled fine when I moved it to main() .