--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/postdog/slider_example.c	Wed Jan 07 04:52:17 2026 -0800
@@ -0,0 +1,115 @@
+
+/*******************************************************************************************
+*
+*   raygui - custom file dialog to load image
+*
+*   DEPENDENCIES:
+*       raylib 4.0  - Windowing/input management and drawing.
+*       raygui 3.0  - Immediate-mode GUI controls.
+*
+*   COMPILATION (Windows - MinGW):
+*       gcc -o $(NAME_PART).exe $(FILE_NAME) -I../../src -lraylib -lopengl32 -lgdi32 -std=c99
+*
+*   LICENSE: zlib/libpng
+*
+*   Copyright (c) 2016-2024 Ramon Santamaria (@raysan5)
+*
+**********************************************************************************************/
+
+#include "third_party/raylib/include/raylib.h"
+
+#define RAYGUI_IMPLEMENTATION
+#include "third_party/raylib/include/raygui.h"
+
+#undef RAYGUI_IMPLEMENTATION            // Avoid including raygui implementation again
+
+#define GUI_WINDOW_FILE_DIALOG_IMPLEMENTATION
+#include "postdog/gui_window_file_dialog.h"
+#define POSTDOG_PATHS "/Users/mrjunejune/zenbu/postdog/history"
+
+
+//------------------------------------------------------------------------------------
+// Program main entry point
+//------------------------------------------------------------------------------------
+int main()
+{
+    // Initialization
+    //---------------------------------------------------------------------------------------
+    int screenWidth = 800;
+    int screenHeight = 560;
+
+    InitWindow(screenWidth, screenHeight, "raygui - custom modal dialog");
+    SetExitKey(0);
+
+    // Custom file dialog
+    GuiWindowFileDialogState fileDialogState = InitGuiWindowFileDialog(POSTDOG_PATHS);
+
+    bool exitWindow = false;
+
+    char fileNameToLoad[512] = { 0 };
+
+    Texture texture = { 0 };
+
+    SetTargetFPS(60);
+    //--------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!exitWindow)    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        exitWindow = WindowShouldClose();
+
+        if (fileDialogState.SelectFilePressed)
+        {
+            // Load image file (if supported extension)
+            if (IsFileExtension(fileDialogState.fileNameText, ".png"))
+            {
+                strcpy(fileNameToLoad, TextFormat("%s" PATH_SEPERATOR "%s", fileDialogState.dirPathText, fileDialogState.fileNameText));
+                UnloadTexture(texture);
+                texture = LoadTexture(fileNameToLoad);
+            }
+
+            fileDialogState.SelectFilePressed = false;
+        }
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(GetColor(GuiGetStyle(DEFAULT, BACKGROUND_COLOR)));
+
+            DrawTexture(texture, GetScreenWidth()/2 - texture.width/2, GetScreenHeight()/2 - texture.height/2 - 5, WHITE);
+            DrawRectangleLines(GetScreenWidth()/2 - texture.width/2, GetScreenHeight()/2 - texture.height/2 - 5, texture.width, texture.height, BLACK);
+
+            DrawText(fileNameToLoad, 208, GetScreenHeight() - 20, 10, GRAY);
+
+            // raygui: controls drawing
+            //----------------------------------------------------------------------------------
+            if (fileDialogState.windowActive) GuiLock();
+
+            if (GuiButton((Rectangle){ 20, 20, 140, 30 }, GuiIconText(ICON_FILE_OPEN, "Open Image"))) fileDialogState.windowActive = true;
+
+            GuiUnlock();
+
+            // GUI: Dialog Window
+            //--------------------------------------------------------------------------------
+            GuiWindowFileDialog(&fileDialogState);
+            //--------------------------------------------------------------------------------
+
+            //----------------------------------------------------------------------------------
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    UnloadTexture(texture);     // Unload texture
+
+    CloseWindow();              // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}