C++ 如何在 QT 框架的 UI 上显示“*.png”文件？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/6910946/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
How to Display a "*.png" file on a UI in QT framework?
提问by karim
I am new to Qt Framework...
我是 Qt 框架的新手...
I want to display a .png pic in my Form1.ui , so I dragged and dropped a Graphic view from the widget box then I placed test.png in the same directory (inside the project folder)
我想在我的 Form1.ui 中显示一个 .png 图片，所以我从小部件框中拖放了一个图形视图，然后我将 test.png 放在同一目录中（在项目文件夹内）
and i did this in the code
我在代码中做了这个
//Form1.cpp
#include "form1.h"
#include "ui_form1.h"
Form1::Form1(QWidget *parent) :
QWidget(parent),
ui(new Ui::Form1)
{
ui->setupUi(this);
ui->Pic1->setStyleSheet("background-image: url(test.png)");
}
Form1::~Form1()
{
delete ui;
}
//Form1.h
#ifndef FORM1_H
#define FORM1_H
#include <QWidget>
namespace Ui {
class Form1;
}
class Form1 : public QWidget
{
Q_OBJECT
public:
explicit Form1(QWidget *parent = 0);
~Form1();
private:
Ui::Form1 *ui;
};
#endif // FORM1_H
It compiled perfectly but the pic didn't appear , What did I Wrong ?
它编译完美，但图片没有出现，我做错了什么？
this is my qrc :
这是我的 qrc ：
回答by Vinicius Kamakura
The Widget you should use to show pictures is a QLabel. You can do it directly from QtCreator, by setting its pixmapproperty.
您应该用来显示图片的小部件是一个QLabel. 您可以通过设置其pixmap属性直接从 QtCreator 执行此操作。
As others said, you should first create a resource file and then add the image to that resource file. To create a Qt Resource File, go to the menus: File > Qt > Qt Resource File.
正如其他人所说，您应该首先创建一个资源文件，然后将图像添加到该资源文件中。要创建 Qt 资源文件，请转到菜单：文件 > Qt > Qt 资源文件。
EDITTo do it programatically:
编辑以编程方式执行此操作：
//names starting with : means that they are on a resource file,
//otherwise in the filesystem
QPixmap * mypix = new QPixmap(":/karim/test.png");
ui->your_label->setPixmap(mypix);
delete mypix;
回答by g_fred
You need to add the image to a resource file: http://doc.qt.io/qt-5/resources.html
您需要将图像添加到资源文件中：http: //doc.qt.io/qt-5/resources.html
回答by Pete
If you have the png in your resources, maybe change your background-image: tag:
如果您的资源中有 png，请更改您的 background-image: 标签：
ui->Pic1->setStyleSheet("background-image: url(:/test.png)");
