CefInitialize崩潰 && Cef白屏

转载自：https://www.itread01.com/content/1545912422.html

新建一個MFC Dialog工程，然後仿照CefSimple模仿實現自己的一個基於MFC視窗的Demo（具體程式碼稍後上），注意我僅僅只配置了所需要依賴的lib，並沒有把CefSample的配置一起Copy，所以才導致後面的白屏，浪費了我一天時間。
坑一：CefInitialize崩潰
也許這個坑很多網友都遇到過，所以尋找度孃的時候問題很快就解決了，就是exe執行環境缺少必須要的資源包（不僅僅dll，所以圖方便我們直接從CefSimple環境拷貝出來）。
在這裡插入圖片描述
坑二：Cef白屏
當出現白屏的時候我第一反應就是程式碼有bug，於是我從MFC工程切換到win32工程，從子視窗切換到Popup，各種嘗試都不行，最後我把CefSimple整個工程拷貝過來，然後按照我的配置修改編譯依舊白屏，此刻問題基本確定：工程配置不對。但是工程配置有什麼不對呢？只能一點點的比較，終於在最後發現：後期生成事件沒有配置。命令如下：

setlocal
mt.exe -nologo -manifest "H:/cef/cef_binary_3.3538.1852.gcb937fc_windows64/tests/cefsimple/cefsimple.exe.manifest" "H:/cef/cef_binary_3.3538.1852.gcb937fc_windows64/tests/cefsimple/compatibility.manifest" -outputresource:"E:/project/CefDemo/x64/Debug/cefsimple.exe";#1
if %errorlevel% neq 0 goto :cmEnd
:cmEnd
endlocal & call :cmErrorLevel %errorlevel% & goto :cmDone
:cmErrorLevel
exit /b %1
:cmDone
if %errorlevel% neq 0 goto :VCEnd
setlocal
"D:\Program Files\CMake\bin\cmake.exe" -E copy_if_different H:/cef/cef_binary_3.3538.1852.gcb937fc_windows64/Debug/chrome_elf.dll E:/project/CefDemo/x64/Debug/chrome_elf.dll
if %errorlevel% neq 0 goto :cmEnd
:cmEnd
endlocal & call :cmErrorLevel %errorlevel% & goto :cmDone
:cmErrorLevel
exit /b %1
:cmDone
if %errorlevel% neq 0 goto :VCEnd
setlocal
"D:\Program Files\CMake\bin\cmake.exe" -E copy_if_different H:/cef/cef_binary_3.3538.1852.gcb937fc_windows64/Debug/d3dcompiler_43.dll E:/project/CefDemo/x64/Debug/d3dcompiler_43.dll
if %errorlevel% neq 0 goto :cmEnd
:cmEnd
endlocal & call :cmErrorLevel %errorlevel% & goto :cmDone
:cmErrorLevel
exit /b %1
:cmDone
if %errorlevel% neq 0 goto :VCEnd
setlocal
"D:\Program Files\CMake\bin\cmake.exe" -E copy_if_different H:/cef/cef_binary_3.3538.1852.gcb937fc_windows64/Debug/d3dcompiler_47.dll E:/project/CefDemo/x64/Debug/d3dcompiler_47.dll
if %errorlevel% neq 0 goto :cmEnd
:cmEnd
endlocal & call :cmErrorLevel %errorlevel% & goto :cmDone
:cmErrorLevel
exit /b %1
:cmDone
if %errorlevel% neq 0 goto :VCEnd
setlocal
"D:\Program Files\CMake\bin\cmake.exe" -E copy_if_different H:/cef/cef_binary_3.3538.1852.gcb937fc_windows64/Debug/libcef.dll E:/project/CefDemo/x64/Debug/libcef.dll
if %errorlevel% neq 0 goto :cmEnd
:cmEnd
endlocal & call :cmErrorLevel %errorlevel% & goto :cmDone
:cmErrorLevel
exit /b %1
:cmDone
if %errorlevel% neq 0 goto :VCEnd
setlocal
"D:\Program Files\CMake\bin\cmake.exe" -E copy_if_different H:/cef/cef_binary_3.3538.1852.gcb937fc_windows64/Debug/libEGL.dll E:/project/CefDemo/x64/Debug/libEGL.dll
if %errorlevel% neq 0 goto :cmEnd
:cmEnd
endlocal & call :cmErrorLevel %errorlevel% & goto :cmDone
:cmErrorLevel
exit /b %1
:cmDone
if %errorlevel% neq 0 goto :VCEnd
setlocal
"D:\Program Files\CMake\bin\cmake.exe" -E copy_if_different H:/cef/cef_binary_3.3538.1852.gcb937fc_windows64/Debug/libGLESv2.dll E:/project/CefDemo/x64/Debug/libGLESv2.dll
if %errorlevel% neq 0 goto :cmEnd
:cmEnd
endlocal & call :cmErrorLevel %errorlevel% & goto :cmDone
:cmErrorLevel
exit /b %1
:cmDone
if %errorlevel% neq 0 goto :VCEnd
setlocal
"D:\Program Files\CMake\bin\cmake.exe" -E copy_if_different H:/cef/cef_binary_3.3538.1852.gcb937fc_windows64/Debug/natives_blob.bin E:/project/CefDemo/x64/Debug/natives_blob.bin
if %errorlevel% neq 0 goto :cmEnd
:cmEnd
endlocal & call :cmErrorLevel %errorlevel% & goto :cmDone
:cmErrorLevel
exit /b %1
:cmDone
if %errorlevel% neq 0 goto :VCEnd
setlocal
"D:\Program Files\CMake\bin\cmake.exe" -E copy_if_different H:/cef/cef_binary_3.3538.1852.gcb937fc_windows64/Debug/snapshot_blob.bin E:/project/CefDemo/x64/Debug/snapshot_blob.bin
if %errorlevel% neq 0 goto :cmEnd
:cmEnd
endlocal & call :cmErrorLevel %errorlevel% & goto :cmDone
:cmErrorLevel
exit /b %1
:cmDone
if %errorlevel% neq 0 goto :VCEnd
setlocal
"D:\Program Files\CMake\bin\cmake.exe" -E copy_if_different H:/cef/cef_binary_3.3538.1852.gcb937fc_windows64/Debug/v8_context_snapshot.bin E:/project/CefDemo/x64/Debug/v8_context_snapshot.bin
if %errorlevel% neq 0 goto :cmEnd
:cmEnd
endlocal & call :cmErrorLevel %errorlevel% & goto :cmDone
:cmErrorLevel
exit /b %1
:cmDone
if %errorlevel% neq 0 goto :VCEnd
setlocal
"D:\Program Files\CMake\bin\cmake.exe" -E copy_directory H:/cef/cef_binary_3.3538.1852.gcb937fc_windows64/Debug/swiftshader E:/project/CefDemo/x64/Debug/swiftshader
if %errorlevel% neq 0 goto :cmEnd
:cmEnd
endlocal & call :cmErrorLevel %errorlevel% & goto :cmDone
:cmErrorLevel
exit /b %1
:cmDone
if %errorlevel% neq 0 goto :VCEnd
setlocal
"D:\Program Files\CMake\bin\cmake.exe" -E copy_if_different H:/cef/cef_binary_3.3538.1852.gcb937fc_windows64/Resources/cef.pak E:/project/CefDemo/x64/Debug/cef.pak
if %errorlevel% neq 0 goto :cmEnd
:cmEnd
endlocal & call :cmErrorLevel %errorlevel% & goto :cmDone
:cmErrorLevel
exit /b %1
:cmDone
if %errorlevel% neq 0 goto :VCEnd
setlocal
"D:\Program Files\CMake\bin\cmake.exe" -E copy_if_different H:/cef/cef_binary_3.3538.1852.gcb937fc_windows64/Resources/cef_100_percent.pak E:/project/CefDemo/x64/Debug/cef_100_percent.pak
if %errorlevel% neq 0 goto :cmEnd
:cmEnd
endlocal & call :cmErrorLevel %errorlevel% & goto :cmDone
:cmErrorLevel
exit /b %1
:cmDone
if %errorlevel% neq 0 goto :VCEnd
setlocal
"D:\Program Files\CMake\bin\cmake.exe" -E copy_if_different H:/cef/cef_binary_3.3538.1852.gcb937fc_windows64/Resources/cef_200_percent.pak E:/project/CefDemo/x64/Debug/cef_200_percent.pak
if %errorlevel% neq 0 goto :cmEnd
:cmEnd
endlocal & call :cmErrorLevel %errorlevel% & goto :cmDone
:cmErrorLevel
exit /b %1
:cmDone
if %errorlevel% neq 0 goto :VCEnd
setlocal
"D:\Program Files\CMake\bin\cmake.exe" -E copy_if_different H:/cef/cef_binary_3.3538.1852.gcb937fc_windows64/Resources/cef_extensions.pak E:/project/CefDemo/x64/Debug/cef_extensions.pak
if %errorlevel% neq 0 goto :cmEnd
:cmEnd
endlocal & call :cmErrorLevel %errorlevel% & goto :cmDone
:cmErrorLevel
exit /b %1
:cmDone
if %errorlevel% neq 0 goto :VCEnd
setlocal
"D:\Program Files\CMake\bin\cmake.exe" -E copy_if_different H:/cef/cef_binary_3.3538.1852.gcb937fc_windows64/Resources/devtools_resources.pak E:/project/CefDemo/x64/Debug/devtools_resources.pak
if %errorlevel% neq 0 goto :cmEnd
:cmEnd
endlocal & call :cmErrorLevel %errorlevel% & goto :cmDone
:cmErrorLevel
exit /b %1
:cmDone
if %errorlevel% neq 0 goto :VCEnd
setlocal
"D:\Program Files\CMake\bin\cmake.exe" -E copy_if_different H:/cef/cef_binary_3.3538.1852.gcb937fc_windows64/Resources/icudtl.dat E:/project/CefDemo/x64/Debug/icudtl.dat
if %errorlevel% neq 0 goto :cmEnd
:cmEnd
endlocal & call :cmErrorLevel %errorlevel% & goto :cmDone
:cmErrorLevel
exit /b %1
:cmDone
if %errorlevel% neq 0 goto :VCEnd
setlocal
"D:\Program Files\CMake\bin\cmake.exe" -E copy_directory H:/cef/cef_binary_3.3538.1852.gcb937fc_windows64/Resources/locales E:/project/CefDemo/x64/Debug/locales
if %errorlevel% neq 0 goto :cmEnd
:cmEnd
endlocal & call :cmErrorLevel %errorlevel% & goto :cmDone
:cmErrorLevel
exit /b %1
:cmDone
if %errorlevel% neq 0 goto :VCEnd

上面命令主要實現兩個功能：
1.將manifest 檔案嵌入到exe內部。
2.將所依賴的檔案copy到執行環境(所以如果配置了這個生成後事件，那麼問題一就不需要手動拷貝依賴項了)。

manifest 檔案學習參考：

所以白屏的根本原因是缺少manifest檔案，導致執行的時候出問題。
解決方法兩種：

把上面的程式碼完整Copy到生成後事件裡面去【記得修改自己的工程目錄】
如果之前已經把必要的檔案和資源Copy到了執行環境，那麼我們只需要Copy如下一段程式碼就OK啦（功能就是把manifest檔案嵌入exe內部）【記得修改自己的工程目錄】：

setlocal
mt.exe -nologo -manifest "H:/cef/cef_binary_3.3538.1852.gcb937fc_windows64/tests/cefsimple/cefsimple.exe.manifest" "H:/cef/cef_binary_3.3538.1852.gcb937fc_windows64/tests/cefsimple/compatibility.manifest" -outputresource:"E:/project/CefDemo/x64/Debug/cefsimple.exe";#1
if %errorlevel% neq 0 goto :cmEnd
:cmEnd
endlocal & call :cmErrorLevel %errorlevel% & goto :cmDone
:cmErrorLevel
exit /b %1
:cmDone
if %errorlevel% neq 0 goto :VCEnd

下一章節將描述如何把Cef作為一個子視窗整合到MFC工程和win32工程。

CefInitialize崩潰 && Cef白屏

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