fix build to work with a current version of ImGui

Master and docking branch both work.

Author: macpete

CMakeLists.txt

@@ -10,8 +10,9 @@ set(SOURCES
 	libs/imgui/imgui.cpp
 	libs/imgui/imgui_widgets.cpp
 	libs/imgui/imgui_draw.cpp
-	libs/imgui/examples/imgui_impl_opengl3.cpp
-	libs/imgui/examples/imgui_impl_sdl.cpp
+	libs/imgui/imgui_tables.cpp
+	libs/imgui/backends/imgui_impl_opengl3.cpp
+	libs/imgui/backends/imgui_impl_sdl.cpp
 )
 
 # cmake toolchain
@@ -50,7 +51,7 @@ set_target_properties(ImFileDialogExample PROPERTIES
 
 # include directories
 target_include_directories(ImFileDialogExample PRIVATE ${SDL2_INCLUDE_DIRS} ${GLEW_INCLUDE_DIRS} ${OPENGL_INCLUDE_DIRS})
-target_include_directories(ImFileDialogExample PRIVATE libs/)
+target_include_directories(ImFileDialogExample PRIVATE libs libs/imgui)
 
 # link libraries
 target_link_libraries(ImFileDialogExample ${OPENGL_LIBRARIES})
@@ -64,4 +65,4 @@ elseif(UNIX AND NOT APPLE)
 	target_link_libraries(ImFileDialogExample ${GLEW_LIBRARIES} ${SDL2_LIBRARIES} ${CMAKE_DL_LIBS} stdc++fs pthread)
 elseif(APPLE)
 	target_link_libraries(ImFileDialogExample GLEW::GLEW ${SDL2_LIBRARIES} ${CMAKE_DL_LIBS})
-endif()
+endif()

example.cpp

@@ -1,7 +1,7 @@
 #include <SDL2/SDL.h>
-#include <imgui/imgui.h>
-#include <imgui/examples/imgui_impl_sdl.h>
-#include <imgui/examples/imgui_impl_opengl3.h>
+#include <imgui.h>
+#include <backends/imgui_impl_sdl.h>
+#include <backends/imgui_impl_opengl3.h>
 #include <time.h>
 
 #ifdef _WIN32
@@ -166,4 +166,4 @@ int main(int argc, char* argv[])
 	SDL_Quit();
 
 	return 0;
-}
+}