WxWidgets - 无法加载图像 [英] WxWidgets - Unable to load images

问题描述

我最近开始使用 WxWidgets (2.9.4) 并且正在学习我找到的教程，但我似乎无法加载任何图像.我已经正确使用了处理程序(对于 PNG)并且问题发生在运行时.下面是尝试运行程序时显示的弹出窗口的图像.

I recently started working with WxWidgets (2.9.4) and was working through a tutorial I found, but it seems that I'm unable to load any images. I've already properly used the handler (for PNG) and the problem happens at run-time. Below is an image of the popup that is displayed when attempting to run the program.

代码如下:

wxPNGHandler *handler = new wxPNGHandler;
wxImage::AddHandler(handler);

wxBitmap exit;

exit.LoadFile(wxT("exit.png"), wxBITMAP_TYPE_PNG);

wxToolBar *toolbar = CreateToolBar();
toolbar->AddTool(wxID_EXIT, exit, wxT("Exit"));
toolbar->Realize();

Connect(wxID_EXIT, wxEVT_COMMAND_TOOL_CLICKED, wxCommandEventHandler(mainWindow::exitProg));

感谢任何帮助.

我忘了提到当我点击取消时，会发生这种情况:

I forgot to mention that when I click Cancel, this happens:

我把exit.png文件放在了build目录(/Debug或/Release)和源代码目录下，但还是没看到.

I placed the exit.png file in the build directory (/Debug or /Release) as well as the source code directory, but it still has yet to see it.

推荐答案

你的工作目录是什么?

如果您使用的是 Visual Studio 并使用界面(F5 或 ctrl-F5 或工具栏中的小运行按钮)运行，那么您的工作目录是包含项目文件的文件夹.因此，请尝试将您的图像文件复制到那里.

If you are using visual studio and running using the interface ( F5 or ctrl-F5 or the little run button in the toolbar ) then your working directory is the folder containing the project file. So try copying your image file there.

或者打开一个命令窗口，cd 到您的构建目录之一，然后从命令行运行您的应用程序.

Or open a command window, cd to one of your build directories, and run your app from the command line.

一般来说，为了避免此类问题，我更改了项目属性，以便可执行文件不存储在构建文件夹之一中，而是存储在一个新文件夹中(我通常称之为bin"——我的 unix 根目录是显示！)并更改调试属性，使工作目录为 bin 文件夹.

In general, to avoid this sort of problem, I alter the project properties so that the executable is NOT stored in one of the build folders, but in a new folder ( which I usually call 'bin' - my unix roots are showing! ) and also alter the debugging properties so that the working directory is the bin folder.

这种技术有几个优点:

• 发行版和调试版都使用相同的文件夹，因此您只需要一份任何额外文件的副本，例如您的图像文件.
• 很容易查看工作目录中的可执行文件和额外文件，而不会被构建文件夹中的所有 .obj 文件分心

恕我直言，在维护非默认项目属性方面花费一些额外的麻烦是值得的.

IMHO this is well worth the little extra trouble in maintaining non default project properties.

这篇关于WxWidgets - 无法加载图像的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！