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Embedding Files in an Executable - Icons & Details - Part 6

#cpp #programming #desktop

How change icon, file details and load a file.txt from resources?

1) Create a simple window:

main.cpp

#include <windows.h> #include <iostream>  LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam); int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow){ WNDCLASS wc = {0}; wc.lpfnWndProc = WndProc; wc.hInstance = hInstance; wc.hbrBackground = (HBRUSH)(COLOR_BACKGROUND); wc.lpszClassName = TEXT("MyWindowClass"); if (!RegisterClass(&wc)) return 1; HWND hwnd = CreateWindow( TEXT("MyWindowClass"), TEXT( "My window" ), WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, 640, 480, NULL, NULL, hInstance, NULL); ShowWindow(hwnd, nCmdShow); MSG msg = {0}; while (GetMessage(&msg, NULL, 0, 0)){ TranslateMessage(&msg); DispatchMessage(&msg); } return (int) msg.wParam; } LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) { switch (msg){ case WM_DESTROY: PostQuitMessage(0); break; default: return DefWindowProc(hwnd, msg, wParam, lParam); } return 0; }
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2) Compile

g++ main.cpp -o main.exe && main
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4) Download 1 or 2 files: favicon.ico

https://favicon.io/emoji-favicons/

5) Create a file: data.txt

My window name
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6) Create resource.h

#define IDI_MYICON 101 #define TEXTFILE 256 #define IDR_DATA1 255  void LoadFileInResource(int name, int type, DWORD& size, const wchar_t*& data){ HMODULE handle = ::GetModuleHandleW(NULL); HRSRC rc = ::FindResourceW(handle, MAKEINTRESOURCEW(name), MAKEINTRESOURCEW(type)); HGLOBAL rcData = ::LoadResource(handle, rc); size = ::SizeofResource(handle, rc); data = static_cast<const wchar_t*>(::LockResource(rcData)); } std::string GetResource(){ DWORD size = 0; const char* data = NULL; LoadFileInResource(IDR_DATA1, TEXTFILE, size, reinterpret_cast<const wchar_t*&>(data)); std::string content(data, size); return content; }
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7) Create resource.rc

#include <windows.h> #include "resource.h" IDI_MYICON ICON "favicon.ico" IDR_DATA1 TEXTFILE "data.txt" VS_VERSION_INFO VERSIONINFO FILEVERSION 1,0,0,1 PRODUCTVERSION 1,0,0,1 FILEFLAGSMASK 0x3fL #ifdef _DEBUG FILEFLAGS 0x1L #else FILEFLAGS 0x0L #endif FILEOS 0x4L FILETYPE 0x2L FILESUBTYPE 0x0L BEGIN BLOCK "StringFileInfo" BEGIN BLOCK "040904b0" BEGIN VALUE "CompanyName", "CompanyName" VALUE "LegalCopyright", "(c) CompanyName. All Rights reserved." VALUE "ProductName", "ProductName35" VALUE "ProductVersion", "1,0,0,1" VALUE "FileDescription", "ProductName" VALUE "InternalName", "ProductName" VALUE "OriginalFilename", "main.exe" VALUE "ShellIntegrationVersion", "2" END END BLOCK "VarFileInfo" BEGIN VALUE "Translation", 0x0416, 1200 END END
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8) Generate resource.res

In Windows

windres.exe -i "resource.rc" --input-format=rc -o "resource.res" -O coff
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In Linux/WSL2

x86_64-w64-mingw32-windres resource.rc -O coff -o resource.o -I/usr/share/mingw-w64/include
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9) Adding icons in window:

Print in console data.txt content:

std::cout << GetResource();
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Display window name:

TEXT( GetResource().c_str() )
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Load icon:

wc.hIcon = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_MYICON));
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Set icons:

SendMessage(hwnd, WM_SETICON, ICON_BIG, (LPARAM)::LoadIcon(::GetModuleHandle(NULL), MAKEINTRESOURCE(IDI_MYICON))); SendMessage(hwnd, WM_SETICON, ICON_SMALL, (LPARAM)::LoadIcon(::GetModuleHandle(NULL), MAKEINTRESOURCE(IDI_MYICON)));
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Destroy icons:

DestroyIcon((HICON)SendMessage(hwnd, WM_GETICON, ICON_SMALL, 0)); DestroyIcon((HICON)SendMessage(hwnd, WM_GETICON, ICON_BIG, 0));
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main.cpp

#include <windows.h> #include <iostream> #include "resource.h"  LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam); int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow){ std::cout << GetResource(); WNDCLASS wc = {0}; wc.lpfnWndProc = WndProc; wc.hInstance = hInstance; wc.hbrBackground = (HBRUSH)(COLOR_BACKGROUND); wc.lpszClassName = TEXT("MyWindowClass"); wc.hIcon = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_MYICON)); if (!RegisterClass(&wc)) return 1; HWND hwnd = CreateWindow( TEXT("MyWindowClass"), TEXT( GetResource().c_str() ), WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, 640, 480, NULL, NULL, hInstance, NULL); // Set icon SendMessage(hwnd, WM_SETICON, ICON_BIG, (LPARAM)::LoadIcon(::GetModuleHandle(NULL), MAKEINTRESOURCE(IDI_MYICON))); SendMessage(hwnd, WM_SETICON, ICON_SMALL, (LPARAM)::LoadIcon(::GetModuleHandle(NULL), MAKEINTRESOURCE(IDI_MYICON))); ShowWindow(hwnd, nCmdShow); MSG msg = {0}; while (GetMessage(&msg, NULL, 0, 0)){ TranslateMessage(&msg); DispatchMessage(&msg); } // Free icon DestroyIcon((HICON)SendMessage(hwnd, WM_GETICON, ICON_SMALL, 0)); DestroyIcon((HICON)SendMessage(hwnd, WM_GETICON, ICON_BIG, 0)); return (int) msg.wParam; } LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) { switch (msg){ case WM_DESTROY: PostQuitMessage(0); break; default: return DefWindowProc(hwnd, msg, wParam, lParam); } return 0; }
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10) Compile

In Windows

g++ main.cpp -o main.exe resource.res
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In Linux/WSL2

x86_64-w64-mingw32-g++ main.cpp resource.o -o main.exe -static-libgcc -static-libstdc++ -I/usr/share/mingw-w64/include
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