Updates

shared/video-sdk/get-started/get-started-sdk/project-implementation/windows.mdx

@@ -17,6 +17,7 @@ A complete code sample that implements the basic process of real-time interactio
 #include <string>
 // Include relevant header files
 #include <IAgoraRtcEngine.h>
+
 using namespace agora;
 using namespace agora::rtc;
 using namespace agora::media;
@@ -29,9 +30,7 @@ using namespace agora::media::base;
 #define EID_USER_OFFLINE        0x00000004
 
 // Define CAgoraQuickStartRtcEngineEventHandler class to handle user joining, leaving channel callbacks
-class CAgoraQuickStartRtcEngineEventHandler
-    : public IRtcEngineEventHandler
-{
+class CAgoraQuickStartRtcEngineEventHandler : public IRtcEngineEventHandler {
 public:
     // Set the handle of the message receiving window
     void SetMsgReceiver(HWND hWnd) { m_hMsgHanlder = hWnd; }
@@ -70,7 +69,6 @@ class CAgoraQuickStartDlg : public CDialog
 // Construction
 public:
     CAgoraQuickStartDlg(CWnd* pParent = nullptr);        // Standard constructor
-
     virtual ~CAgoraQuickStartDlg();
 
 // Dialog Data
@@ -88,7 +86,6 @@ public:
 
 protected:
     HICON m_hIcon;
-
     CStatic        m_staRemote;
     CStatic        m_staLocal;
     CEdit        m_edtChannelName;
@@ -234,7 +231,27 @@ void CAgoraQuickStartDlg::OnSysCommand(UINT nID, LPARAM lParam) {
         CDialog::OnSysCommand(nID, lParam);
     }
 }
-// If the dialog box has a minimize button, the framework should draw the icon
+// If you add a minimize button to the dialog box, you need the following code
+// to draw the icon. For MFC applications using the document/view model, this is done automatically by the framework
+void CAgoraQuickStartDlg::OnPaint() {
+    if (IsIconic()) {
+        CPaintDC dc(this);
+        // Device context for drawing
+        SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()),0);
+        // Center the icon in the client rectangle
+        int cxIcon = GetSystemMetrics(SM_CXICON);
+        int cyIcon = GetSystemMetrics(SM_CYICON);
+        CRect rect;
+        GetClientRect(&rect);
+        int x = (rect.Width() - cxIcon + 1) / 2;
+        int y = (rect.Height() - cyIcon + 1) / 2;
+        // Draw the icon
+        dc.DrawIcon(x, y, m_hIcon);
+    } else {
+        CDialog::OnPaint();
+    }
+}
+
 // This function is called by the framework to obtain the cursor when the user drags the minimized window
 HCURSOR CAgoraQuickStartDlg::OnQueryDragIcon() {
     return static_cast<HCURSOR>(m_hIcon);
@@ -278,15 +295,15 @@ void CAgoraQuickStartDlg::OnBnClickedBtnJoin() {
     m_rtcEngine->startPreview();
 }
 void CAgoraQuickStartDlg::OnBnClickedBtnLeave() {
+    // Stop local video preview
+    m_rtcEngine->stopPreview();
     // Leave the channel
     m_rtcEngine->leaveChannel();
     // Clear local view
     VideoCanvas canvas;
     canvas.uid = 0;
     m_rtcEngine->setupLocalVideo(canvas);
     m_remoteRender = false;
-    // Stop the preview
-    m_rtcEngine->startPreview();
 }
 LRESULT CAgoraQuickStartDlg::OnEIDJoinChannelSuccess(WPARAM wParam, LPARAM lParam) {
     // Join channel success callback