QT 中 QGLWidget 不能够嵌入到 QGraphicsView 中及解决方案
症状: QPainter::begin: A paint device can only be painted by one painter at a time. 参考资料: http://www.qtcentre.org/archive/index.php/t-20669.html https:/...
使用定制的QGLWidget调用QGraphicsView: setViewport
I've derived from QGLWidget before, like so: 我之前从QGLWidget中推导过,比如: class MyGLWidget : public QGLWidget{public: // stuff... virtual void initialize...
QGLWidget的QPainter drawText()将中文的中文文本上下颠倒。
I use codes below to draw text in QGLWidget, but when the text is long and mixed Chinese(or Japanese) with English, then the text becomes upside down....
无法在QGLWidget中设置想要的OpenGL版本?
I'm trying to use QGLWidget in Qt 4.8.2. I noticed that the default context QGLWidget creates doesn't show any output for OpenGL above 3.1. The Qt wik...
QT_Opengl编程遇到的问题,QWidget控件被QGLWidget窗口遮挡,使用Raise(),Lower()方法无效!
Windows下运行结果: Mac下运行结果: 另外在ubuntu下运行也是与Windows下一致的。 我现在需要button按钮在Opengl窗口的上层,就是Windows下的那种效果。大家可以看到在Mac下pushbutton被挡住了,求解! http://pan.baidu.com/s/...
QGLWidget paintEvent:在哪里初始化openGL?
It seems that the paintEvent method of the QGLWidget is called before initializeGL, so where am I supposed to put my openGL initialization code? QGLWi...
如何激活QPainter::beginNativePainting, Painter inactive QGLWidget?
I got a *.dll file with follwing class signature 我有一个*。dll文件和下面的类签名。 class Render_WidgetGL: public QGLWidget { Q_OBJECT} I created such a Render_Wi...
Qt——在一个3D场景中包含QGraphicsView的多个层(QGLWidget)
I'm currently evaluating the possibilities to implement a navigable 3D scene which allows to render multiple 2D layers. To be a bit more precise, I wo...
在QGLWidget上使用QPainter时,需要哪些步骤来启用反混叠?
I am trying to draw basic shapes on a QGLWidget. I am trying to enable antialiasing to smooth out the lines, but it is not working. 我试着在一个QGLWidget上画基...
QGLWidget的QPainter drawText()将中文的中文文本上下颠倒。
I use codes below to draw text in QGLWidget, but when the text is long and mixed Chinese(or Japanese) with English, then the text becomes upside down....
为什么QGLWidget只呈现空白屏幕?
I have used OpenGL in SDL before, but I have just started to learn QT. In QT, using OpenGL is proving to be somewhat of a pain. I have the following t...
请教QGLWidget下QPainter的反锯齿怎么设置?
我通过重载paintEvent(QPaintEvent * e)用QPainter进行绘图,但是QPainter->setRenderHint(QPainter::Antialiasing, true); 设置后无效,不知道QGLWidget中的反锯齿是否需要一些其它的设置才能生效?2 个解决...
QT 2D图形硬件加速(QGLWidget QPainter)
我希望利用GPU硬件加速图形绘制,于是想到了Qt的OpenGL模块 QT Demo里的2D paintings是这么说明的 The 2D Painting example shows how QPainter and QGLWidget can be used together to displ...
QT5:QPainter+QGLWidget VS QML+SceneGraph performance
QT官方一直宣称QT5的SceneGraph绘制效率比普通绘制效率高很多,但并没有具体的实例证实,写了两个测试程序,用例一基于SceneGraph QML绘制,用例二基于QGLWidget上的QPainter绘制,测试环境为redhat 6 x86_64,ati radeon hd 5450...