Add support for xp

[felixmaker]

Add support for xp

[felixmaker]

Thank you! I switch to v141_xp toolchain and build the program successful. I checked my project, maybe when I test the program in XP, I forgot to move the .xml file at the same time, so the window do not show.

👍 I have tested the program, it just works fine! 👍

PS: If we want to support XP, we need to disable the touch support first in config.h (maybe XP do not support touch!) and then use v141_xp toolchain to build.

[lc-soft]

This is possible if VCPkg supports compilation of dependent libraries for Windows XP. Otherwise, you need to manually use the XP compilation toolchain to compile LCUI and its dependent libraries.

[felixmaker]

I tried to build LCUI using /MT option, but it failed. Link error 2001 @_BrotliDecoderDecompress (freetype).

[lc-soft]

You need to link to the Brotli library because FreeType depends on it.

[felixmaker]

Thank you! I have built the dll, but when I replace the dll in my project, the program run failed, it does not show in screen and needs to kill in the task manager. Have you met with this situation?

[lc-soft]

You didn't provide your build environment and build methods, so I couldn't give a solution.

Maybe you can run the program with debugging tools.

[felixmaker]

Sorry, I use VS2019 and MSVC V142 (both are the latest version) to build LCUI.dll etc and use lcpkg to install all dependcies.
The first time I built the program, the compiler can not include some header files. So I change those lines.
In platform.h, before

#if defined(WINAPI_PARTITION_APP)
    #define LCUI_APP_H <LCUI/platform/windows/uwp.h>
#else
    #define LCUI_EVENTS_H <LCUI/platform/windows/windows_events.h>
    #define LCUI_MOUSE_H <LCUI/platform/windows/windows_mouse.h>
    #define LCUI_KEYBOARD_H <LCUI/platform/windows/windows_keyboard.h>
    #define LCUI_DISPLAY_H <LCUI/platform/windows/windows_display.h>
#endif

after

#define LCUI_EVENTS_H <LCUI/platform/windows/windows_events.h>
#define LCUI_MOUSE_H <LCUI/platform/windows/windows_mouse.h>
#define LCUI_KEYBOARD_H <LCUI/platform/windows/windows_keyboard.h>
#define LCUI_DISPLAY_H <LCUI/platform/windows/windows_display.h>

Then I built the program, but when I replace it in my project, it doesn't work.

[lc-soft]

I use VS2019 and MSVC V142 (both are the latest version) to build LCUI.dll etc

v142? Why not use v142_xp? You said you want to support windows XP, then you should use v142_xp.

In the solution configuration of LCUI, the platform toolset has selected v141_xp, you can switch to v142_xp, so you don't need to modify the platform.h file.

the program run failed, it does not show in screen and needs to kill in the task manager.
... Then I built the program, but when I replace it in my project, it doesn't work.

Are you using VS2019 to build your project? If so, please use vs2019 to debug it. The general steps are as follows:

1. Add a breakpoint on the line of code below LCUI_Init().
   
2. Click "Local windows debugger".
   
3. Check local variables.
   
4. Click "Continue".
   
5. If nothing is displayed, click “Break All”.
   
6. Check Threads and Call stack.
   

[lc-soft]

It seems that the problem has been solved and this issue can be closed.