fix: coordinate errors due to DPI differences across different monitors

ColorPicker/ColorPicker.cpp

@@ -1,4 +1,4 @@
-// Copyright (C) 2022 Chiahong Hong.
+// Copyright (C) 2024 Chiahong Hong.
 
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -20,7 +20,7 @@ int APIENTRY wWinMain(_In_ HINSTANCE hInstance,
                       _In_ PWSTR pCmdLine,
                       _In_ int nCmdShow)
 {
-    SetProcessDPIAware();
+    SetProcessDpiAwareness(PROCESS_PER_MONITOR_DPI_AWARE);
 
     // Register the window class.
     TCHAR CLASS_NAME[] = "MainWindow";
@@ -125,7 +125,7 @@ LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 
         HGDIOBJ hNewFont = CreateFont(70, 0, 0, 0, FW_DONTCARE, 0, 0, 0, DEFAULT_CHARSET, OUT_OUTLINE_PRECIS,
             CLIP_DEFAULT_PRECIS, CLEARTYPE_QUALITY, VARIABLE_PITCH, TEXT("Consolas"));
-        
+
         HGDIOBJ hOldFont = (HFONT)SelectObject(hdc, hNewFont);
 
         // Draw text

ColorPicker/ColorPicker.h

@@ -1,4 +1,4 @@
-// Copyright (C) 2022 Chiahong Hong.
+// Copyright (C) 2024 Chiahong Hong.
 
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -17,6 +17,8 @@
 
 #include <windows.h>
 #include <strsafe.h>
+#include <shellscalingapi.h>
+#pragma comment(lib, "Shcore.lib")
 
 LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
 

README.md

@@ -9,7 +9,7 @@ Implement a Screen Color Picker using the Windows API.
 - CMake 3.8
 
 ## License
-Copyright (C) 2022 Chiahong Hong.
+Copyright (C) 2024 Chiahong Hong.
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by