類(lèi)說(shuō)明

CAPickerView的滾動(dòng)事件的代理

CAPickerViewDelegate 方法（點(diǎn)擊查看方法介紹）

CAPickerViewDelegate 方法說(shuō)明

virtual unsigned int numberOfComponentsInPickerView(CAPickerView* pickerView) = 0; 

返回值：unsigned int

參數(shù)：

解釋?zhuān)韩@取PickerView的Component數(shù)量

virtual unsigned int numberOfRowsInComponent(CAPickerView* pickerView, unsigned int component) = 0;

返回值：unsigned int

參數(shù)：

解釋?zhuān)?span>獲取PickerView的Component行數(shù)

virtual float widthForComponent(CAPickerView* pickerView, unsigned int component) {return 0;}

返回值：float

參數(shù)：

解釋?zhuān)?span>PickerView的Component寬度

virtual float rowHeightForComponent(CAPickerView* pickerView, unsigned int component) {return 0;}

返回值：float

參數(shù)：

解釋?zhuān)?span>PickerView的Component高度

virtual const char* titleForRow(CAPickerView* pickerView, unsigned int row, unsigned int component) {return NULL;}

返回值：const char*

參數(shù)：

解釋?zhuān)?span>PickerView的Row標(biāo)題

virtual CAView* viewForRow(CAPickerView* pickerView, unsigned int row, unsigned int component) {return NULL;}

返回值：CAView* 

參數(shù)：

解釋?zhuān)?span>PickerView的背景圖像

virtual CAView* viewForSelect(CAPickerView* pickerView, unsigned int component, const DSize& size) {return NULL;}

返回值：CAView* 

參數(shù)：

解釋?zhuān)?span>PickerView的選中時(shí)圖像