需求是要把一串数字转化成条码，显示在界面上供打印机打印。
过程是使用zint库转化文本为rgb的buffer,然后把rgb转换成qt的QPixmap,在界面上显示，
如果是MFC的话，原理相通，有rgb数据显示都好办。
- QPixmap Bitmap2Pixmap(unsigned char *bitmap, int width, int height)
- {
- QImage img(bitmap, width, height, QImage::Format_RGB888);
- QPixmap ret;
- ret.convertFromImage(img);
- return ret;
- }
-
-
-
- struct zint_symbol *m_symbol;
- m_symbol = ZBarcode_Create();
- if (m_symbol == NULL)
- {
- QMessageBox::warning(this, "test", "ZBarcode_Create create failed!");
- return;
- }
- else
- {
- m_symbol->symbology = BARCODE_CODE128;
- m_symbol->scale = 2;
- }
-
- ZBarcode_Encode_and_Buffer(m_symbol, (unsigned char *)inputStr.toLocal8Bit().data(), deviceId.size(), 0);
- QPixmap pixmap = Bitmap2Pixmap((unsigned char *)m_symbol->bitmap, m_symbol->bitmap_width, m_symbol->bitmap_height);
- ui->codeLabel->setPixmap(pixmap);
- ZBarcode_Delete(m_symbol);