Looks like it would be good to add raygui.h.

///////////////// this is my code
module main

import mohamedlt.vraylib as raylib

fn main() {
raylib.init_window(640, 480, 'project test mohamedlt.vraylib'.str)

texture_pth := '/home/thanh/projects/vprojects/test/unit.png'
test_texture := raylib.load_texture(texture_pth.str)

mut render2 := raylib.load_render_texture(200, 200)

raylib.set_target_f_p_s(60)

for !raylib.window_should_close() {
	
	raylib.begin_texture_mode(render2)
		raylib.clear_background(raylib.black)
		raylib.draw_texture(test_texture, 190, 64, raylib.green)
		raylib.draw_text('ABCDEFGHJKL'.str, 190, 0, 16, raylib.green)
	raylib.end_texture_mode()

	raylib.begin_drawing()
	raylib.clear_background(raylib.white)

	source := raylib.Rectangle{0, 0, 200, -200}
	dest := raylib.Rectangle{200, 200, 200, 200}
	origin := raylib.Vector2{x: 100, y: 100}
	rot := f32(0)
	raylib.draw_texture_pro(render2.texture, source, dest, origin, rot, raylib.white)
	
	raylib.draw_text('hello world'.str, 10, 250, 16, raylib.black)
	raylib.end_drawing()
}
raylib.unload_texture(test_texture)
raylib.unload_render_texture(render2)
raylib.close_window()

}
/////////////////////////////////
after that, i edited the "raylib.c.v" file in folder "/home/thanh/.vmodules/mohamedlt/vraylib":
from this struct:
struct C.RenderTexture {
id u32
texture Texture
depth Texture
}

i changed it to:
struct C.RenderTexture {
pub:
id u32
texture Texture
depth Texture
}
then, i met this: "error: cannot use vraylib.Texture as vraylib.Texture2D in argument 1 to mohamedlt.vraylib.draw_texture_pro"

so, i change the above struct to:
struct C.RenderTexture {
pub:
id u32
texture Texture2D
depth Texture
}
finally, it works! i don't know if this is the right way to fix this or not? please help me!

project is v/examples/vraylib/main.v

running returns the error. Commenting out math returns errors because math is used. Not sure what to do

/home/USERNAME/.vmodules/mohamedlt/vraylib/raylib.c.v:3:8: warning: module 'math' is imported but never used
    1 | module vraylib
    2 | 
    3 | import math
      |        ~~~~
    4 | 
    5 | #flag linux -L @VMODROOT/lib/linux

compiling the example gives:

C:/Users/ben13/.vmodules/mohamedlt/vraylib/raylib.c.v:3:8: warning: module 'math' is imported but never used
1 | module vraylib
2 |
3 | import math
| ~~~~
4 |
5 | #flag linux -L @VMODROOT/lib/linux
C:/Users/ben13/AppData/Local/Temp/v_0/main.6930240050094114573.tmp.c:504: warning: WINVER redefined
In file included from C:/Users/ben13/AppData/Local/Temp/v_0/main.6930240050094114573.tmp.c:808:
C:/Users/ben13/.vmodules/mohamedlt/vraylib/include/raylib.h:237: error: incompatible redefinition of 'Rectangle'
builder error:

C error. This should never happen.

This is a compiler bug, please report it using v bug file.v.