How to run egui under windows xp？

[xixioba]

I want to run egui in Windows XP (32bit), so I refer to the rust9x and compile rust 1.76 under msys2+mingw32 environment, and helloworld project works perfectly
However, when I tested the demo of egui, a problem occurred, dwmapi.dll not found, and after doing some related searches, it seems that dwm is a feature added to Windows Vista.

I don't know how to bypass this problem, and any help is greatly appreciated!

[xixioba]

After some trying, stuck here, if anyone has experience know how to fix it, it would be greatly appreciated
point_ftol2 could not be located int the dynamic link library msvcrt.dll

[YgorSouza]

Have you tried linking the CRT statically? Although as discussed here, it still links to some libraries dynamically because they are supposed to be in every version of Windows that Rust supports, and Rust dropped Windows XP 4 years ago, so I'm guessing this is going to be a bit of an uphill battle.

[xixioba]

I have linked it, I think it may not be a problem with rust, because I also tried imgui example, they have the same problem
Maybe the msys2 mingw32 environment cannot support windows xp gui programs? It really confuses me

[xixioba]

The effort brought some progress, MSYS2 Mingw32 can run OpenGL2-based GUI programs on Windows XP, so maybe the problem is back to egui

[xixioba]

After some attempts, I can't get any further.
I have successfully tested imgui example_glfw_opengl2, it only needs a few dependencies, which can be met under windows xp.

demo@DESKTOP-8PCFGOB MINGW32 /c/imgui-master/examples/example_glfw_opengl2
$ make
g++ -std=c++11 -I../.. -I../../backends -g -Wall -Wformat -D _USING_V110_SDK71_ -Wl,--subsystem,windows -Wl,--subsystem,console -static -static-libgcc -static-libstdc++ `pkg-config --cflags glfw3` -c -o main.o main.cpp
g++ -std=c++11 -I../.. -I../../backends -g -Wall -Wformat -D _USING_V110_SDK71_ -Wl,--subsystem,windows -Wl,--subsystem,console -static -static-libgcc -static-libstdc++ `pkg-config --cflags glfw3` -c -o imgui.o ../../imgui.cpp
g++ -std=c++11 -I../.. -I../../backends -g -Wall -Wformat -D _USING_V110_SDK71_ -Wl,--subsystem,windows -Wl,--subsystem,console -static -static-libgcc -static-libstdc++ `pkg-config --cflags glfw3` -c -o imgui_demo.o ../../imgui_demo.cpp
g++ -std=c++11 -I../.. -I../../backends -g -Wall -Wformat -D _USING_V110_SDK71_ -Wl,--subsystem,windows -Wl,--subsystem,console -static -static-libgcc -static-libstdc++ `pkg-config --cflags glfw3` -c -o imgui_draw.o ../../imgui_draw.cpp
g++ -std=c++11 -I../.. -I../../backends -g -Wall -Wformat -D _USING_V110_SDK71_ -Wl,--subsystem,windows -Wl,--subsystem,console -static -static-libgcc -static-libstdc++ `pkg-config --cflags glfw3` -c -o imgui_tables.o ../../imgui_tables.cpp
g++ -std=c++11 -I../.. -I../../backends -g -Wall -Wformat -D _USING_V110_SDK71_ -Wl,--subsystem,windows -Wl,--subsystem,console -static -static-libgcc -static-libstdc++ `pkg-config --cflags glfw3` -c -o imgui_widgets.o ../../imgui_widgets.cpp
g++ -std=c++11 -I../.. -I../../backends -g -Wall -Wformat -D _USING_V110_SDK71_ -Wl,--subsystem,windows -Wl,--subsystem,console -static -static-libgcc -static-libstdc++ `pkg-config --cflags glfw3` -c -o imgui_impl_glfw.o ../../backends/imgui_impl_glfw.cpp
g++ -std=c++11 -I../.. -I../../backends -g -Wall -Wformat -D _USING_V110_SDK71_ -Wl,--subsystem,windows -Wl,--subsystem,console -static -static-libgcc -static-libstdc++ `pkg-config --cflags glfw3` -c -o imgui_impl_opengl2.o ../../backends/imgui_impl_opengl2.cpp
g++ -o example_glfw_opengl2 main.o imgui.o imgui_demo.o imgui_draw.o imgui_tables.o imgui_widgets.o imgui_impl_glfw.o imgui_impl_opengl2.o -std=c++11 -I../.. -I../../backends -g -Wall -Wformat -D _USING_V110_SDK71_ -Wl,--subsystem,windows -Wl,--subsystem,console -static -static-libgcc -static-libstdc++ `pkg-config --cflags glfw3` -lglfw3 -lgdi32 -lopengl32 -limm32
Build complete for MinGW

However, egui seems to rely on many libraries, which can't be met under windows xp.

"-Wl,-Bdynamic" "-lopengl32" "-lgdi32" "-luser32" "-lshell32" "-lwinapi_advapi32" "-lwinapi_cfgmgr32" "-lwinapi_gdi32" "-lwinapi_kernel32" "-lwinapi_msimg32" "-lwinapi_opengl32" "-lwinapi_shell32" "-lwinapi_shlwapi" "-lwinapi_synchronization" "-lwinapi_user32" "-lwinapi_winspool" "-lbcrypt" "-ladvapi32" "-lwindows.0.52.0" "-lkernel32" "-ladvapi32" "-lbcrypt" "-lkernel32" "-lntdll" "-luserenv" "-lws2_32" "-lkernel32" "-lntdll" "-lgcc_eh" "-l:libpthread.a" "-lmsvcrt" "-lmingwex" "-lmingw32" "-lgcc" "-lmsvcrt" "-luser32" "-lkernel32" "-Wl,--nxcompat" "-L" "D:\\gitlabs\\dist\\rust9x\\lib\\rustlib\\i686-pc-windows-gnu\\lib" "-o" "C:\\Users\\demo\\Downloads\\egui_glfw_gl-master\\egui_glfw_gl-master\\target\\i686-pc-windows-gnu\\release\\deps\\egui_glfw_gl-8adfcef6eac81fe2.exe" "-Wl,--gc-sections" "-no-pie" "-Wl,-O1" "-nodefaultlibs" "-D _USING_V110_SDK71_" "-Wl,--subsystem,console,5.01" "-Wl,--subsystem,windows"

Is there any chance that it can be like imgui?

[YgorSouza]

Egui itself doesn't depend on most of that, it's eframe that does. And the demo app also adds a bunch more dependencies. So maybe you can try a simpler example, with some of eframe's features disabled, or an alternative integration from the list in the readme https://github.com/emilk/egui?tab=readme-ov-file#3rd-party-integrations. Or as a last resort, write your own integration following the instructions that are in the readme as well, so you can use a backend that supports Windows XP.