Question

我正在尝试开始在WT中开发，但它没有成功。我正在使用Windows 8，下载了Wt 3.3.1，并下载了具有GCC编译器和GDB调试器的codeblocks-12.11mingw-setup_user.exe。但我没有使用代码块，因为编译器不喜欢WtConfig.h中的cmake preproccessor指令。所以我尝试手动编译（我是使用这种技术的新手，所以我不得不查看它。）

我的项目是：

└───HelloWorldWt
    └───source
        ├───bin
        │   ├───Debug
        │   │   └───CMakeFiles
        │   │       └───CMakeFiles
        │   └───Release
        ├───build
        └───source
        |   └───CMakeFiles
        |       └───wt_project.wt.dir
        |       |___CMakeLists.txt
        |       |
        |       |___main.cpp
        |____CMakeLists.txt

main.cpp有（这是来自http://www.webtoolkit.eu/wt/examples/的HelloWorld示例）：

#include <Wt/WApplication>
#include <Wt/WBreak>
#include <Wt/WContainerWidget>
#include <Wt/WLineEdit>
#include <Wt/WPushButton>
#include <Wt/WText>

// c++0x only, for std::bind
// #include <functional>

using namespace Wt;

/*
 * A simple hello world application class which demonstrates how to react
 * to events, read input, and give feed-back.
 */
class HelloApplication : public WApplication
{
public:
  HelloApplication(const WEnvironment& env);

private:
  WLineEdit *nameEdit_;
  WText *greeting_;

  void greet();
};

/*
 * The env argument contains information about the new session, and
 * the initial request. It must be passed to the WApplication
 * constructor so it is typically also an argument for your custom
 * application constructor.
*/
HelloApplication::HelloApplication(const WEnvironment& env)
  : WApplication(env)
{
  setTitle("Hello world");                               // application title

  root()->addWidget(new WText("Your name, please ? "));  // show some text
  nameEdit_ = new WLineEdit(root());                     // allow text input
  nameEdit_->setFocus();                                 // give focus

  WPushButton *button
    = new WPushButton("Greet me.", root());              // create a button
  button->setMargin(5, Left);                            // add 5 pixels margin

  root()->addWidget(new WBreak());                       // insert a line break

  greeting_ = new WText(root());                         // empty text

  /*
   * Connect signals with slots
   *
   * - simple Wt-way
   */
  button->clicked().connect(this, &HelloApplication::greet);

  /*
   * - using an arbitrary function object (binding values with boost::bind())
   */
  nameEdit_->enterPressed().connect
    (boost::bind(&HelloApplication::greet, this));

  /*
   * - using a c++0x lambda:
   */
  // b->clicked().connect(std::bind([=]() {
  //       greeting_->setText("Hello there, " + nameEdit_->text());
  // }));
}

void HelloApplication::greet()
{
  /*
   * Update the text, using text input into the nameEdit_ field.
   */
  greeting_->setText("Hello there, " + nameEdit_->text());
}

WApplication *createApplication(const WEnvironment& env)
{
  /*
   * You could read information from the environment to decide whether
   * the user has permission to start a new application
   */
  return new HelloApplication(env);
}

int main(int argc, char **argv)
{
  /*
   * Your main method may set up some shared resources, but should then
   * start the server application (FastCGI or httpd) that starts listening
   * for requests, and handles all of the application life cycles.
   *
   * The last argument to WRun specifies the function that will instantiate
   * new application objects. That function is executed when a new user surfs
   * to the Wt application, and after the library has negotiated browser
   * support. The function should return a newly instantiated application
   * object.
   */
  int retval = WRun(argc, argv, &createApplication);
  char* ch = new ch();
  cin() >> ch;
  return retval;
}

HelloWorldWt / CMakeLists.txt有：

CMAKE_MINIMUM_REQUIRED(VERSION 2.6)

PROJECT(WT_HELLO_WORLD)

SET (WT_CONNECTOR "wtfcgi" CACHE STRING "Connector used (wthttp or wtfcgi)")

ADD_SUBDIRECTORY(source)

HelloWorldWt / source / CMakeLists.txt有

SET(WT_PROJECT_SOURCE
main.cpp
)

SET(WT_PROJECT_TARGET wt_project.wt)

ADD_EXECUTABLE(${WT_PROJECT_TARGET} ${WT_PROJECT_SOURCE})

TARGET_LINK_LIBRARIES(${WT_PROJECT_TARGET} ${WT_CONNECTOR} wt)

INCLUDE_DIRECTORIES("C:/Users/Me/My Code Libraries/wt-3.3.1/src")

然后我跑了

cmake .. -G "MinGW Makefiles" from the MyCode directory

创建了一些文件，这创建了cmake_install.cmake，以及其他文件。

然后我从HelloWorldWt / source运行：cmake .. -G“MinGW Makefiles” 然后我跑了：cmake -P cmake_install.cmake

然后我：我的Code \ HelloWorldWt \ source \ build \ CMakeFiles \ 2.8.12 \ CompilerIdCXX \ a.exe文件，我点击该程序运行它，然后打开一个控制台窗口然后关闭。

我在这里缺少什么？，我正在尝试运行Wt应用程序，但似乎无法做到这一点

（也许我应该注意，当我使用命令时：

cmake -P cmake_install.cmake

cmd控制台，回复

-- Install configuration: ""

然后返回提示。 - 如果有帮助的话。）

Answer 1

 My Code\HelloWorldWt\source\build\CMakeFiles\2.8.12\CompilerIdCXX\a.exe

不是您要运行的文件。这是cmake在配置期间创建的内部CMake测试，用于验证所选编译器是否编译并检测目标体系结构。

您的可执行文件将被称为

My Code\HelloWorldWt\source\build\wt_project.wt.exe

实际编译时

。

要编译它，您可以根据所选的生成器调用make或其他适当的构建命令，或者您可以让cmake使用以下命令为您调用它：

cmake --build .

您粘贴的代码包含语法错误 -

cin() >> ch;

应该是

std::cin >> ch;

（而ch应该是char，而不是char * - 这证实您还没有尝试编译它。

我应该补充一下，简要介绍一下WT文档，建议生成的可执行文件在做任何有趣的事情之前还需要一堆选项。

Answer 2

我们正在使用g ++，因为它是一个c ++接口（与gcc相对），scons作为构建模型。这很好用，部署起来非常简单。我建议尝试下一个Ubuntu 14.04版本，因为它将在其包中包含一个稳定的Wt版本。

Wt a.exe文件将无法运行

2 个答案: