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主题:518抽奖软件源码之:窗口化、全屏化、扩展屏

在开发“518抽奖软件”的时候,需要用到窗口化、全屏化、移到扩展屏的功能。 网上找的代码都不够全面,有时候会被任务栏挡住。所以自己写了一个代码,下面的代码是商业产品上正式使用的代码,比一般网上随便写的代码好的多,各种情况测试都通过。

窗口创建阶段的源码

	if (m_wndPos.wndMode == WNDMODE_WINDOW)
		m_hMain = CreateWindow(WNDCLASS_NAME, g_title, WS_POPUP, m_wndPos.x, m_wndPos.y, m_wndPos.w, m_wndPos.h, NULL, NULL, m_hInst, NULL);
	else 
		m_hMain = CreateWindow(WNDCLASS_NAME, g_title, WS_POPUP, 0, 0, GetSystemMetrics(SM_CXSCREEN), GetSystemMetrics(SM_CYSCREEN), NULL, NULL, m_hInst, NULL);

	ShowWindow (m_hMain, SW_SHOW);
	UpdateWindow (m_hMain);
	SetWindowPos(m_hMain, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE);

窗口消息里的源码

	case WM_ACTIVATEAPP:
		if ((BOOL)wParam) {
			SetWindowPos(hWnd, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE);
		}
		else {
			SetWindowPos(hWnd, HWND_NOTOPMOST, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE | SWP_NOACTIVATE);
			PostMessage(hWnd, WM_APP_BRINGTOTOP, 0, 0);
		}
		break;
	case WM_APP_BRINGTOTOP:
		BringWindowToTop(GetForegroundWindow());
		break;
	case WM_SHOWWINDOW:
		if (!(BOOL)wParam) return DefWindowProc(hWnd, message, wParam, lParam);
		else SetWindowPos(hWnd, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE);
		break;
	case WM_LBUTTONDOWN:
		BringWindowToTop(g_app.m_hMain);
		break;

窗口化、全屏化、扩展屏切换的源码

	wndPos_t& wp = g_app.m_wndPos;
	int cx = GetSystemMetrics(SM_CXSCREEN);
	int cy = GetSystemMetrics(SM_CYSCREEN);

	if (wmId == IDM_window)
	{
		if (wp.wndMode == WNDMODE_EXSCRN) SetCursorPos(cx - 1, cy - 1); //鼠标移回主窗口

		wp.wndMode = WNDMODE_WINDOW;
		MoveWindow(g_app.m_hMain, wp.x, wp.y, wp.w, wp.h, TRUE);

		Sleep(16);
		BringWindowToTop(g_app.m_hMain);
	}
	else if (wmId == IDM_fuscrn)
	{
		if (wp.wndMode == WNDMODE_EXSCRN) SetCursorPos(cx - 1, cy - 1); //鼠标移到扩展屏

		wp.wndMode = WINMODE_FUSCRN;
		MoveWindow(g_app.m_hMain, 0, 0, cx, cy, TRUE);
	}
	else if (wmId == IDM_exscrn)
	{
		RECT rc;
		if (!g_app.get_exscrn(rc)) MessageBox(g_app.m_hMain, L"无扩展屏", g_title, MB_OK | MB_ICONWARNING);
		else
		{
			wp.wndMode = WNDMODE_EXSCRN;
			MoveWindow(g_app.m_hMain, rc.left, rc.top, rc.right - rc.left, rc.bottom - rc.top, TRUE);
			SetCursorPos(rc.right - 1, rc.bottom - 1);
		}
	}

获得第二屏(扩展屏)位置的源码

	BOOL Tapp::get_exscrn(RECT& rcExscrn)
	{
		RECT rc = { 0 };
		EnumDisplayMonitors(NULL, NULL, Callback_enumMonitors, (LPARAM)&rc);
		if (rc.left == 0 && rc.top == 0 && rc.right == 0 && rc.bottom == 0) return FALSE;
		rcExscrn = rc;
		return TRUE;
	}
	static BOOL CALLBACK Callback_enumMonitors(HMONITOR hMonitor, HDC hdcMonitor, LPRECT lprcMonitor, LPARAM dwData)
	{
		RECT* rc = (RECT*)dwData;
	
		MONITORINFO mi = { 0 };
		mi.cbSize = sizeof(MONITORINFO);
		GetMonitorInfo(hMonitor, &mi);
		if (mi.dwFlags != MONITORINFOF_PRIMARY)
		{
			*rc = mi.rcMonitor;
			return FALSE;
		}
		return TRUE;
	}
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