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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(291.2, 72%, 38%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ECM%3C/text%3E%3C/svg%3E)
When adding a new IDL file (ProjectItem.idl along with ProjectItem.h and .cpp) I get the following error:
1><path>ProjectItem.g.h(52,10): error C1083: Cannot open include file: '<path>\packages\Microsoft.WindowsAppSDK.1.4.231219000\lib\uap10.0.18362\Microsoft.Foundation.h': No such file or directory
If I go to the ProjectItem.g.h file I can see the include:
#include "<project>\packages\Microsoft.WindowsAppSDK.1.4.231219000\lib\uap10.0.18362\Microsoft.Foundation.h"
Then if I go to the path <project>\packages\Microsoft.WindowsAppSDK.1.4.231219000\lib\uap10.0.18362\, I can see that the Microsoft.Foundation.h is missing:
Directory: packages\Microsoft.WindowsAppSDK.1.4.231219000\lib\uap1
0.0.18362
Mode LastWriteTime Length Name
---- ------------- ------ ----
-a---- 15.12.2023 01:16 1536 Microsoft.Foundation.winmd
-a---- 20.12.2023 00:52 219 Microsoft.Foundation.xml
-a---- 15.12.2023 01:16 11264 Microsoft.Graphics.winmd
-a---- 20.12.2023 00:52 26946 Microsoft.Graphics.xml
-a---- 15.12.2023 01:16 259072 Microsoft.UI.winmd
-a---- 20.12.2023 00:52 492724 Microsoft.UI.xml
What could be the problem? Why is the generated file containing a header that is missing? Note: The project is a "Blank App, Packaged with Windows Application Packaging Project (WinUI3 in Desktop)" that I just created.
The simple test case can be found here: https://github.com/cosmin42/cpp-photobook On this branch:
issue/windows-foundation-not-found
Under windows\PhotobookUI\PhotobookUI.sln
The project
PhotobookRuntimeComponent
which is independent of the other projects in the solution. Thank you!
@Cosmin Mihai I will make a research on that. Sorry for the delay.
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HI, @Cosmin Mihai Sorry for the delay.
I've already tried to reproduce it.
After adding the "Projectitem.cpp", I didn't see any error about #include <winrt/Windows.Foundation.h>.
And you got wrong directory. Also, It within "……\Generated Files\winrt". So please check this directory.
If you still have the issue. You might need to reinstall something on windows app sdk with C++.
2.Windows app sdk C++ template in Desktop Development with C++.
What do you mean I got wrong directory? MIDL is generating the wrong include and I do not know how to change that. Where did you add the ProjectItem.cpp file? It is already added under windows\PhotobookRuntimeComponent .
@Cosmin Mihai Microsoft.Foundation.h is not belong to this directory.
Also, I think I reproduced your issue. I create a new Blank App, Packaged with Windows Application Packaging Project (WinUI3 in Desktop). It shows error before debugging.
Actually, it can pass the compilation. It will build the generated file and debug file successfully after debugging local machine (F5).
So please add your new IDL file after passing the compilation**.**
After some debugging, the solution is to name the header file as %(Filename)_g.h instead of %(Filename)_g.h .