Content of CMakeLists.txt:

cmake_minimum_required(VERSION 3.0) project(alpha)

set(CMAKE_C_STANDARD 11) set(CMAKE_CXX_STANDARD 17)

set(GTK3_INCLUDE_DIRS "C:/msys64/mingw64/include/") set(GTK3_LIBRARY_DIRS "C:/msys64/mingw64/lib") set(ENV{PKG_CONFIG_PATH} "C:/msys64/mingw64/lib/pkgconfig")

find_package(PkgConfig REQUIRED) pkg_check_modules(GTK4 REQUIRED gtk4)

include_directories(${GTK4_INCLUDE_DIRS}) link_directories(${GTK4_LIBRARY_DIRS}) add_definitions(${GTK4_CFLAGS_OTHER})

add_executable(TutorialApp main.c) set_target_properties(TutorialApp PROPERTIES WIN32_EXECUTABLE true) # If you dont want console to run with your .exe target_link_libraries(TutorialApp ${GTK4_LIBRARIES})

commands by me just try don't try: pacman -Syu pacman -S pkgconf

pacman -S mingw-w64-x86_64-gtk3 mingw-w64-x86_64-toolchain pkg-config --cflags --libs gtk+-3.0

tasks.json

{ "version": "2.0.0", "tasks": [ { "label": "build GTK program", "type": "shell", "command": "gcc", "args": [ "-o", "main", // output executable name "main.c", // source file "pkg-config", // begin pkg-config command "--cflags", // include compiler flags "--libs", // include linker flags "gtk+-3.0" // GTK library ], "group": { "kind": "build", "isDefault": true }, "problemMatcher": ["$gcc"], "detail": "Generated task to build GTK program" } ] }

othehr one: // main.c #include <gtk/gtk.h>

int main(int argc, char *argv[]) { gtk_init(&argc, &argv);

GtkWidget *window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_title(GTK_WINDOW(window), "Hello, World!");
gtk_window_set_default_size(GTK_WINDOW(window), 200, 100);

GtkWidget *label = gtk_label_new("Hello, World!");
gtk_container_add(GTK_CONTAINER(window), label);

g_signal_connect(window, "destroy", G_CALLBACK(gtk_main_quit), NULL);

gtk_widget_show_all(window);
gtk_main();

return 0;

}

tasks.json // tasks.json { "version": "2.0.0", "tasks": [ { "label": "build GTK program", "type": "shell", "command": "gcc", "args": [ "main.c", "pkg-config --cflags --libs gtk+-3.0", "-o", "hello_world_app" ], "group": { "kind": "build", "isDefault": true }, "problemMatcher": ["$gcc"], "detail": "Compiles the GTK application" } ] }

run ctrl + shft + b

./hello_world_app