我正在尝试构建自己的错误处理程序，该处理程序根据我在枚举类errorNo {}中隐含的一些错误号来引发错误。我还想使用__PRETTY_FUNCTION__包含源函数。错误处理程序看起来像这样（较简单的版本...具有std :: string ...枚举中没有errorNo）：
void errorHandler（std :: string message，int errorCode）{
开关（错误代码）{
默认值：
抛出std :: runntime_error（message）; } }
然后将其命名为：
errorHandler（std :: string（“ Error in：”）+
__PRETTY_FUNCTION__，0）;
错误处理程序是否可以自动获得调用函数的名称，而无需任何显式声明？我尝试过：
void errorHandler（std :: string message，int errorCode，const char * functionName =
__PRETTY_FUNCTION__）{抛出std :: runntime_error（“ + functionName”中的消息+“
}
我得到警告，__PRETTY_FUNCTION__仅在函数中被允许，即使在我得到输出后，我也会收到“顶级错误”。
答案 0 :(得分：0)
您可以将body{
background-repeat: no-repeat;
background-size: cover;
width:100%;
height:100%;
overflow: hidden;
background-size: 100vw 100vh;
}
#box1 {
position: absolute;
top: 28.3vh;
left: -10.98vw;
cursor: pointer;
border: px solid #0066CC;
background-repeat: no-repeat;
background-size: contain;
}
#box1 p {
width: 10.0vw;
height: 10.0vh;
border-radius: 25%;
}
#box2 {
position: absolute;
top: 13.7vh;
left: -10.98vw;
cursor:pointer;
border:px solid #0066CC;
background-repeat:no-repeat;
background-size: contain;
}
#box2 p {
width: 5.0vw;
height: 5.0vh;
border-radius: 25%;
}
#box3 {
position: absolute;
top: 7.7vh;
left: 43.98vw;
cursor:pointer;
border:px solid #0066CC;
background-size: contain;
background-repeat:no-repeat;
}
#box3 p {
width: 7.0vw;
height: 7.0vh;
border-radius: 25%;
}
#box4 {
position: absolute;
top: 28.3vh;
left: 40.98vw;
cursor:pointer;
border:px solid #0066CC;
background-repeat:no-repeat;
background-size:cover;
background-size: contain;
}
#box4 p {
width: 10.0vw;
height: 10.0vh;
border-radius: 25%;
}
.container2 {
width: 50.1vw;
position: fixed;
top: 10.5vh;
left: 30.5vw;
}
.boxright1 p {
font-size: calc(2vw);
height: 4vh;
margin: 0;
color: white;
background-size: cover;
background-repeat:no-repeat;
color: #0066ff;
text-shadow: 0px 0px 0px #999, 0px 0px 0px #888, 0px 0px 0px #777, 0px 0px 0px #6066, 0px 2px 0px #555, 0px 0px 0px #444, 0px 0px 0px #333, 0px 0
px 0px #001135;
font:'ChunkFiveRegular';
}
.boxright1 {
position: absolute;
top: 65.3vh;
left: 17.5vw;
width: 61.0vw;
height: 35.0vh;
cursor:pointer;
border:2px solid black;
background-repeat:no-repeat;
background-size: contain;
background-image:url(images/name%20board%20witout%20rope2.png);
background-size: 40vw 55vh;
}
.boxright1 .box{
position: absolute;
}
.boxright1 .box:nth-child(1) {
top: 0px;
left: 155px;
}
.boxright1 .box:nth-child(2) {
top: 5px;
left:215px;
}
.boxright1 .box:nth-child(3) {
top: 0px;
left: 315px;
}
.boxright1 .box:nth-child(4) {
top: 5px;
left: 415px;
}存储在该特定函数的<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<p>applying nth child to Class boxright1 not working</p>
<div class="container2">
<div class="containerr">
<div class="pic" id="content">
<div id="container">
<div class="box" id="box1" draggable="true" ondragstart="drag(event)" style="background-image:url(https://picsum.photos/200/300)">
<p name="values" id="name1" class="hidden"></p>
</div>
<div class="box" id="box2" draggable="true" ondragstart="drag(event)" style="background-image:url(https://picsum.photos/g/200/300)">
<p name="values" id="name2" class="hidden"></p>
</div>
<div class="box" id="box3" draggable="true" ondragstart="drag(event)" style="background-image:url(https://picsum.photos/200/300?image=0)">
<p name="values" id="name3" class="hidden"></p>
</div>
<div class="box" id="box4" draggable="true" ondragstart="drag(event)" style="background-image:url(https://picsum.photos/200/300/?gravity=east)">
<p name="values" id="name4" class="hidden"></p>
</div>
</div>
</div>
</div>
</div>
<div class="boxright1" ondrop="drop(event)" ondragover="allowDrop(event)" id="4" name="d"></div>中，然后将该字符串传递给__PRETTY_FUNCTION__函数。
类似这样的东西：
std::string观看现场演示here。