带有文本和整数组件的 ShowMessage
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【中文标题】带有文本和整数组件的 ShowMessage【英文标题】:ShowMessage with text and integer components 【发布时间】:2012-09-24 04:14:23 【问题描述】:我无法显示由某些文本和整数组合而成的消息
这是我的代码:
int integerNumberOfImportantAppointments = calCalendar.getNumberOfImportantAppointments();
if (integerNumberOfImportantAppointments > 0)
ShowMessage("You have " + integerNumberOfImportantAppointments + " important appointments. Do you wish to view them?");
我收到以下错误:E2085 无效的指针添加
我可以帮我解决这个问题吗?
谢谢
【问题讨论】:
【参考方案1】:您最好使用std::istringstream
,而不是使用sprintf
或itoa
(或类似的):
int iNumberOfImportantAppointments = calCalendar.getNumberOfImportantAppointments();
if (iNumberOfImportantAppointments > 0)
std::istringstream istr;
istr << "You have " << iNumberOfImportantAppointments << " important appointments. Do you wish to view them?";
ShowMessage(istr.str().c_str());
PS。描述性的变量/函数名称很好,但也有这样的太长名称。 :)
【讨论】:
【参考方案2】:试试这个:
int integerNumberOfImportantAppointments = calCalendar.getNumberOfImportantAppointments();
if (integerNumberOfImportantAppointments > 0)
// itoa is not standard (like any of this is)
WCHAR strN[32];
swprintf(strN, L"%d", integerNumberOfImportantAppointments);
// not familiar with ShowMessage(), but I *think* this will work.
ShowMessage("You have " + UnicodeString(strN) + " important appointments. Do you wish to view them?");
【讨论】:
【参考方案3】:关于这个:
int integerNumberOfImportantAppointments = calCalendar.getNumberOfImportantAppointments();
char buffer[30];
if (integerNumberOfImportantAppointments > 0)
itoa (integerNumberOfImportantAppointments,buffer,10);
ShowMessage("You have " + buffer + " important appointments. Do you wish to view them?");
【讨论】:
谢谢。我收到以下错误:E2193 Too little parameters in call to 'itoa(int,char *,int)' and E2034 Cannot convert 'string' to 'UnicodeString'以上是关于带有文本和整数组件的 ShowMessage的主要内容,如果未能解决你的问题,请参考以下文章
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