autocolor

The Qpixmap class represents the image, which is implemented in the Qtgui shared library. Structure The Qpixmap object generated by the following constructor is an empty image: Qpixmap (); Constructs an empty image with a size of 0 The following constructor generates the size of the Qpixmap object, but the image data is not initialized: Qpixmap (const qsize size); Constructs an image of size, the image data is uninitialized qpixmap (int width, int height); Equivalent to Qpixmap (qs

int qimage::bytecount () const Returns the size of the image that is stored int qimage::bytesperline () const Returns the number of bytes per row of an image Equivalent to ByteCount ()/height () Qrgb qimage::color (int i) const Returns the RGB value of the I position in the color table int qimage::colorcount () const Returns the number of colors in a color table qvectorQrgb> qimage::colortable () const Returns the color table qimage qimage::converttoformat (format format, qt::i Mageco

-> setupUi (this ); Init (); } MainWindow ::~ MainWindow () { Delete ui; CvReleaseVideoWriter ( videoWrite ); } Void MainWindow: changeEvent (QEvent * e) { QMainWindow: changeEvent (e ); Switch (e-> type ()){ Case QEvent: LanguageChange: Ui-> retranslateUi (this ); Break; Default: Break; } } Void MainWindow: init () { Timer = new QTimer; Capture = cvCreateCameraCapture (0 ); Size = cvSize (1, 320,240 ); VideoWrite = cvCreateVideoWriter ("test. avi", CV_FOURCC ('M', 'J', 'P', 'G'), 10, si

screen. Write the function here. // int x = 0; // int y = 0; // int W = 300; // int H = 300; /**************************** the qpixmap can be properly saved in the following steps, you can skip qiameg *************************** // fullscreen = fullscreen. copy (X, Y, W, H); // change the screenshot area here. // fullscreen. save (filename, "jpg") requires the Save dialog box to write // If (fullscreen. save ("/savescreen.jpg", "jpg") // qdebug ("---------- save screen success ----------"); /**

Function declaration: void qpainter: drawimage (const qrectf target, const qimage image, const qrectf source, QT: imageconversionflags flags = QT: autocolor)Example:Qrectf target (10.0, 20.0, 80.0, 60.0); // create a target rectangleQrectf source (0.0, 0.0, 70.0, 40.0); // create a source rectangle to specify the part to be displayed in the source Image FileQimage image (":/images/myimage.png"); // create a qimage Class Object Image Qpainter painte