不兼容的类型分配给键入时'的char [128]“从类型'字符*' [英] incompatible types when assigning to type 'char[128]' from type 'char *'

问题描述

我想指定的char *字段为char *领域，但得到这个错误：

分配给当键入

不兼容的类型'的char [128]从类型'字符*'

我怎么能解决这个问题？为什么是这样？

  AddressItem_Callback_ContextType *上下文=（AddressItem_Callback_ContextType *）malloc的（的sizeof（AddressItem_Callback_ContextType））;   //检查图标需要下载
   如果（pEntity-＆GT;！cBigIcon [0] = 0）{
      如果（res_get（RES_BITMAP，RES_SKIN，pEntity-＆GT; cBigIcon）== NULL）{          上下文＆GT;图标= pEntity-＆GT; cBigIcon;
          上下文＆GT; IID = pEntity-＆GT; IID;         res_download（RES_DOWNLOAD_IMAGE，pEntity-＆GT; cBigIcon，NULL，，TRUE，1 addressItem_icon_download_callback，背景）;
      }
   }
 

声明：

  typedef结构
{
    诠释IID; // POI类型ID
    INT iExternalPoiServiceID; //服务ID
    INT iExternalPoiProviderID; //提供商ID
    焦炭cBigIcon [MAX_ICON_LENGHT]
    焦炭cSmallIcon [MAX_ICON_LENGHT]
    焦炭cBigPromotionIcon [MAX_ICON_LENGHT]
    焦炭cSmallPromotionIcon [MAX_ICON_LENGHT]
    焦炭cOnClickUrl [MAX_URL_LENGTH]
..
} RTExternalPoiType;typedef结构
{
    诠释IID; // POI类型ID
   // INT iExternalPoiServiceID; //服务ID
   // INT iExternalPoiProviderID; //提供商ID
    焦图标[MAX_ICON_LENGHT]
} AddressItem_Callback_ContextType;
 

解决方案

数组名是不能修改这些常量指针。在这种情况下图标是一个常量指针以及

 上下文＆GT;图标= pEntity-＆GT; cBigIcon;
 

在这里你要修改它，这是不允许的。

试试这个..

的strcpy（上下文>图标，pEntity-> cBigIcon）;

I'm trying to assign char* field to char* field, but get this error:

incompatible types when assigning to type 'char[128]' from type 'char *'

how can I fix this? and why is that happening?

    AddressItem_Callback_ContextType *context = (AddressItem_Callback_ContextType *)malloc(sizeof(AddressItem_Callback_ContextType));

   //check if icons need to be downloaded
   if (pEntity->cBigIcon[0] != 0){
      if (res_get(RES_BITMAP,RES_SKIN, pEntity->cBigIcon) == NULL){

          context->Icon = pEntity->cBigIcon;
          context->iID = pEntity->iID;

         res_download(RES_DOWNLOAD_IMAGE, pEntity->cBigIcon, NULL, "",TRUE, 1, addressItem_icon_download_callback, context );
      }
   }

declarations:

typedef struct
{
    int  iID;        //  POI Type ID
    int  iExternalPoiServiceID; // Service ID
    int  iExternalPoiProviderID; // Provider ID
    char cBigIcon[MAX_ICON_LENGHT];
    char cSmallIcon[MAX_ICON_LENGHT];
    char cBigPromotionIcon[MAX_ICON_LENGHT];
    char cSmallPromotionIcon[MAX_ICON_LENGHT];
    char cOnClickUrl[MAX_URL_LENGTH];
..
} RTExternalPoiType;

typedef struct
{
    int  iID;        //  POI Type ID
   //int  iExternalPoiServiceID; // Service ID
   // int  iExternalPoiProviderID; // Provider ID
    char Icon[MAX_ICON_LENGHT];
} AddressItem_Callback_ContextType;

解决方案

Array names are constant pointers you can not modify them. In this scenario Icon is a constant pointer and

            context->Icon = pEntity->cBigIcon;

here you are trying to modify it, which is not allowed.

Try this ..

strcpy(context->Icon,pEntity->cBigIcon);

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