feat: fix multi video source case

Author: zhangqianze

windows/APIExample/APIExample.sln

@@ -1,9 +1,12 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 15
-VisualStudioVersion = 15.0.28307.852
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.32228.343
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "APIExample", "APIExample\APIExample.vcxproj", "{DB16CA2F-3910-4449-A5BD-6A602B33BE0F}"
+	ProjectSection(ProjectDependencies) = postProject
+		{2B345C3C-4BEA-4DA3-B754-43F9AD219D4A} = {2B345C3C-4BEA-4DA3-B754-43F9AD219D4A}
+	EndProjectSection
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "ProcessScreenShare", "APIExample\Advanced\MultiVideoSource\ProcessScreenShare\ProcessScreenShare.vcxproj", "{2B345C3C-4BEA-4DA3-B754-43F9AD219D4A}"
 EndProject
@@ -29,8 +32,8 @@ Global
 		{2B345C3C-4BEA-4DA3-B754-43F9AD219D4A}.Debug|x64.Build.0 = Debug|x64
 		{2B345C3C-4BEA-4DA3-B754-43F9AD219D4A}.Release|Win32.ActiveCfg = Release|Win32
 		{2B345C3C-4BEA-4DA3-B754-43F9AD219D4A}.Release|Win32.Build.0 = Release|Win32
-		{2B345C3C-4BEA-4DA3-B754-43F9AD219D4A}.Release|x64.ActiveCfg = Debug|x64
-		{2B345C3C-4BEA-4DA3-B754-43F9AD219D4A}.Release|x64.Build.0 = Debug|x64
+		{2B345C3C-4BEA-4DA3-B754-43F9AD219D4A}.Release|x64.ActiveCfg = Release|x64
+		{2B345C3C-4BEA-4DA3-B754-43F9AD219D4A}.Release|x64.Build.0 = Release|x64
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

windows/APIExample/APIExample/Advanced/MultiVideoSource/CAgoraMutilVideoSourceDlg.cpp

@@ -284,6 +284,13 @@ int CAgoraMutilVideoSourceDlg::StartMultiVideoSource()
 	dwProcessId = getProcessID("ProcessScreenShare.exe");
 	if (0 >= dwProcessId)
 		dwProcessId = openProcess("ProcessScreenShare.exe", m_strChannel + " " + GET_APP_ID);
+	
+
+	wchar_t buf[256];
+	FormatMessageW(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
+		NULL, GetLastError(), MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
+		buf, (sizeof(buf) / sizeof(wchar_t)), NULL);
+
 	m_lstInfo.InsertString(m_lstInfo.GetCount() - 1, _T("start porcess success"));
 
 	m_HandleData.process_id = (unsigned long)dwProcessId;

windows/APIExample/APIExample/Advanced/MultiVideoSource/ProcessScreenShare/ProcessScreenShare.vcxproj

@@ -22,7 +22,7 @@
     <ProjectGuid>{2B345C3C-4BEA-4DA3-B754-43F9AD219D4A}</ProjectGuid>
     <RootNamespace>ProcessScreenShare</RootNamespace>
     <Keyword>MFCProj</Keyword>
-    <WindowsTargetPlatformVersion>10.0.17763.0</WindowsTargetPlatformVersion>
+    <WindowsTargetPlatformVersion>10.0.19041.0</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
@@ -35,7 +35,7 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v141</PlatformToolset>
+    <PlatformToolset>v142</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
     <UseOfMfc>Dynamic</UseOfMfc>
   </PropertyGroup>
@@ -50,7 +50,7 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v141</PlatformToolset>
+    <PlatformToolset>v142</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
     <UseOfMfc>Dynamic</UseOfMfc>