// Compteur cliquable : clic = +1, Shift + clic = remise à zéro.

// Compilation : cl.exe /EHsc compteur.cpp /link /SUBSYSTEM:WINDOWS

 

#include <windows.h>

 

int compteur = 0;

 

HICON CreateCounterIcon()

{

HDC hdc = GetDC(NULL);

HDC memDC = CreateCompatibleDC(hdc);

HBITMAP color = CreateCompatibleBitmap(hdc, 32, 32);

HBITMAP old = (HBITMAP)SelectObject(memDC, color);

 

HBRUSH black = CreateSolidBrush(RGB(0, 0, 0));

RECT r = { 0, 0, 32, 32 };

FillRect(memDC, &r, black);

DeleteObject(black);

 

HFONT font = CreateFontW(29, 0, 0, 0, FW_BOLD, FALSE, FALSE, FALSE, DEFAULT_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS, DEFAULT_QUALITY, DEFAULT_PITCH, L"Arial");

HFONT oldFont = (HFONT)SelectObject(memDC, font);

 

SetBkMode(memDC, TRANSPARENT);

SetTextColor(memDC, RGB(255, 255, 255));

DrawTextW(memDC, L"C", -1, &r, DT_CENTER | DT_VCENTER | DT_SINGLELINE);

 

SelectObject(memDC, oldFont);

DeleteObject(font);

SelectObject(memDC, old);

 

HBITMAP mask = CreateBitmap(32, 32, 1, 1, NULL);

 

ICONINFO ii = {};

ii.fIcon = TRUE;

ii.hbmMask = mask;

ii.hbmColor = color;

 

HICON icon = CreateIconIndirect(&ii);

 

DeleteObject(mask);

DeleteObject(color);

DeleteDC(memDC);

ReleaseDC(NULL, hdc);

 

return icon;

}

 

LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)

{

switch (uMsg)

{

case WM_LBUTTONDOWN:

if (wParam & MK_SHIFT) compteur = 0; else compteur++;

InvalidateRect(hwnd, NULL, TRUE);

return 0;

 

case WM_PAINT:

{

PAINTSTRUCT ps;

HDC hdc = BeginPaint(hwnd, &ps);

RECT rect;

GetClientRect(hwnd, &rect);

 

HBRUSH blackBrush = CreateSolidBrush(RGB(0, 0, 0));

FillRect(hdc, &rect, blackBrush);

DeleteObject(blackBrush);

 

HFONT font = CreateFontW(48, 0, 0, 0, FW_NORMAL, FALSE, FALSE, FALSE, DEFAULT_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS, DEFAULT_QUALITY, DEFAULT_PITCH | FF_DONTCARE, L"Arial");

HFONT oldFont = (HFONT)SelectObject(hdc, font);

 

wchar_t texte[32];

wsprintfW(texte, L"%d", compteur);

 

SetBkMode(hdc, TRANSPARENT);

SetTextColor(hdc, RGB(255, 255, 255));

DrawTextW(hdc, texte, -1, &rect, DT_CENTER | DT_VCENTER | DT_SINGLELINE);

 

SelectObject(hdc, oldFont);

DeleteObject(font);

EndPaint(hwnd, &ps);

return 0;

}

 

case WM_DESTROY:

PostQuitMessage(0);

return 0;

}

 

return DefWindowProcW(hwnd, uMsg, wParam, lParam);

}

 

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE, LPSTR, int nCmdShow)

{

const wchar_t CLASS_NAME[] = L"CompteurWin32";

HICON icon = CreateCounterIcon();

 

WNDCLASSW wc = {};

wc.lpfnWndProc = WindowProc;

wc.hInstance = hInstance;

wc.lpszClassName = CLASS_NAME;

wc.hCursor = LoadCursorW(NULL, IDC_ARROW);

wc.hIcon = icon;

wc.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH);

 

RegisterClassW(&wc);

 

HWND hwnd = CreateWindowExW(0, CLASS_NAME, L"Compteur", WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU, CW_USEDEFAULT, CW_USEDEFAULT, 40, 80, NULL, NULL, hInstance, NULL);

 

if (!hwnd) return 0;

 

SendMessageW(hwnd, WM_SETICON, ICON_BIG, (LPARAM)icon);

SendMessageW(hwnd, WM_SETICON, ICON_SMALL, (LPARAM)icon);

 

ShowWindow(hwnd, nCmdShow);

UpdateWindow(hwnd);

 

MSG msg = {};

 

while (GetMessageW(&msg, NULL, 0, 0))

{

TranslateMessage(&msg);

DispatchMessageW(&msg);

}

 

DestroyIcon(icon);

 

return 0;

}