Qt 报错:use of undeclared identifier 在做一些SDK开发的时候,我们会拷贝例子代码到自己代码中进行测试 这个过程中就会拷贝到一些方法或者变量 经常会出现下图的情况 系统提示 use of undeclared identifier ' 某个变量' 一般可能是.h文件中没有定义此变量,如果检查头文件后发现也定义了。 但是还是出现这个问题,就需...
QT use of undeclared identifier 'cout' 在QT 5.12中直接使用cout将提示错误如下: 添加库 #include<iostream>,并将cout&end改为std::cout&std::endl 代码如下: 1#include"mainwindow.h"2#include<iostream>3#include <QApplication>45intmain(intargc,char*argv[])6{7QApplication a(argc, argv);8MainWind...
use of undeclared identifier 'connect'参考以上网址,问题在于自己定义的类没有继承weiget,所以也就没有connect这个函数。在定义类时加上对weiget的继承即可
/Volumes/HardDisk/Work/Change/Cloud/nextcloud/desktop/src/gui/settingsdialogmac.cpp:162:26: error: use of undeclared identifier 'insertSeparator'; did you mean 'isSeparator'? _separators[s] = insertSeparator(_actionsIdx - 1); ^~~~ isSeparator /Volumes/HardDisk/Qt5.11/5.11.1/clang_64/lib/Q...
clang -o ../out/release/tmp/drape_frontend/follow_animation.o animation/follow_animation.cpp In file included from animation/follow_animation.cpp:4: ./animation_system.hpp:47:39: error: use of undeclared identifier 'strcmp' (customType == nullptr || strcmp(anim->GetCustomType().c_str()....
trees/TreeRender/Shader/DefaultDepth.frag.glslhelloERROR:0:20: Useofundeclared identifier'gl_FragData' the DefaultLight.frag.glsl: #version 400 coreinvec4 VertPosition;invec4 VertNormal;invec4 VertColor;invec4 VertTexture; uniform vec3 lightPos;voidmain(){floatmoment1 = gl_FragCoord.z;float...
解决Xcode运行Use of undeclared identifier‘AVCaptureDeviceTypeBuiltInUltraWideCamera‘的问题 今天运行XCode遇到了这个报错,搜了一下发现网上还没有人提出这个问题? 我记录一下自己的解决方案吧。 一、运行环境: 1. Xcode 模拟器ios版本13.5.1 2. 安装包 react-native-camera , 直接默认安装的稳定版: npm instal...
During a rebuild of all packages in sid, your package failed to build on amd64. Relevant part (hopefully): > transcode.c:428:35: error: use of undeclared identifier 'SAMPLE_FMT_S16'; did > you mean 'AV_SAMPLE_FMT_S16'? > if ((ctx->acodec->sample_fmt != SAMPLE_FMT_S16) ...
The underlying type of a "classic"enumshall be an integer type large enough to fit all the values of theenum; this is usually anint. Also each enumerated type shall be compatible withcharor a signed/unsigned integer type. This is a wide description of what anenumunderlying type must be,...