继续调试：（1）132像素不能打印的问题；（2）标签打印机空白的问题；

lewaimai_pos_windows/helper/CBitmapHelper.h

@@ -41,6 +41,6 @@ public:
 private:
     Gdiplus::Bitmap* m_bmp = NULL;
 
-    int m_threshold = 128;
+    int m_threshold = 200;
 };
 

lewaimai_pos_windows/tool/CPosPrinter.cpp

@@ -35,7 +35,7 @@ void CPosPrinter::InitUsb(int usbType)
     {
         LOG_INFO("准备打开端口 Port = " << m_usb_devices[i].c_str());
 
-        HANDLE hPort = CreateFile(m_usb_devices[i].c_str(), GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
+        HANDLE hPort = CreateFile(m_usb_devices[i].c_str(), GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED, NULL);
 
         if(hPort == INVALID_HANDLE_VALUE)
         {
@@ -78,7 +78,7 @@ void CPosPrinter::InitUsb(int usbType)
 
 void CPosPrinter::InitOneUsb(wstring usb_path)
 {
-    HANDLE hPort = CreateFile(usb_path.c_str(), GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
+    HANDLE hPort = CreateFile(usb_path.c_str(), GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED, NULL);
 
     if(hPort == INVALID_HANDLE_VALUE)
     {
@@ -796,14 +796,16 @@ void CPosPrinter::PrintWaimaiOrderShouyin(CWaimaiOrder& order)
 
         POS_FeedLine();
 
-		POS_FeedLine();
+		POS_FeedLine();;
 		POS_FeedLine();
 
         //准备开始打印二维码
         std::string order_no = order.m_order_no;
         order_no = CLewaimaiString::UTF8ToANSI(order_no);
 
-		POS_OutQRCode(order_no);
+		//POS_OutQRCode(order_no);
+
+		POS_OutBmp(L"D:\\200.jpg");
 
         //走纸几行再切
         POS_FeedLine();
@@ -1238,7 +1240,7 @@ int CPosPrinter::WriteBuf(const unsigned char* buf, int len)
         {
             HANDLE hPort = (*it).hPort;
 
-            if((*it).type == 1 || (*it).type == 3)
+            if((*it).type == 3)
             {
                 //串口，同步写数据
                 //LOG_INFO("before com writefile handle:" << hPort);
@@ -1262,7 +1264,7 @@ int CPosPrinter::WriteBuf(const unsigned char* buf, int len)
                     if(GetLastError() == ERROR_IO_PENDING)
                     {
                         //LOG_INFO("Request queued, waiting... handle:" << hPort);
-                        WaitForSingleObject(hPort, 1000);
+                        WaitForSingleObject(hPort, 3000);
                         //LOG_INFO("Request completed, handle:" << hPort);
 
                         //计算写入了多少字节的数据
@@ -1599,17 +1601,20 @@ void CPosPrinter::POS_OutBmp(std::wstring ImagePath)
 		int newHeight = (int)(nHeight / (nWidth / 380.0));
 
 		helper.ScaleBitmap(newWidth, newHeight);;
+
+		nWidth = newWidth;
+		nHeight = newHeight;
 	}
 
 	//二值化
 	helper.Image2Values();
 
+	//获得最新的图像指针
+	bmp = helper.getBmp();
+
 	//选择位图模式
 	unsigned char escBmp[5] = { 0x1B, 0x2A, 0x21, 0x00, 0x00 };
 
-	nWidth = bmp->GetWidth();
-	nHeight = bmp->GetHeight();
-
 	escBmp[3] = (unsigned char)(nWidth % 256);
 	escBmp[4] = (unsigned char)(nWidth / 256);