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所以我的任務是創建5個子窗口，並按下其他順序關閉窗口。但是我有一個問題，當我關閉前兩個窗口時，其他窗口變爲非活動狀態，所以我必須點擊它才能關注窗口，但是如何防止其他窗口變爲非活動狀態？如何在關閉一個窗口後阻止Win32應用程序，其他窗口變爲不活動
#include "stdafx.h"
#define MAX_LOADSTRING 100
// Global Variables:
HINSTANCE hInst; // current instance
WCHAR szTitle[MAX_LOADSTRING]; // The title bar text
WCHAR szWindowClass[MAX_LOADSTRING]; // the main window class name
int windowsCount = 1;
WCHAR buffer[5];
HWND windows[5];
// Forward declarations of functions included in this code module:
ATOM MyRegisterClass(HINSTANCE hInstance);
BOOL InitInstance(HINSTANCE, int);
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
INT_PTR CALLBACK About(HWND, UINT, WPARAM, LPARAM);
int APIENTRY wWinMain(_In_ HINSTANCE hInstance,
_In_opt_ HINSTANCE hPrevInstance,
_In_ LPWSTR lpCmdLine,
_In_ int nCmdShow)
{
srand(unsigned(time(NULL)));
UNREFERENCED_PARAMETER(hPrevInstance);
UNREFERENCED_PARAMETER(lpCmdLine);
// TODO: Place code here.
// Initialize global strings
LoadStringW(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
LoadStringW(hInstance, IDC_OOP10, szWindowClass, MAX_LOADSTRING);
MyRegisterClass(hInstance);
// Perform application initialization:
if (!InitInstance(hInstance, nCmdShow))
return FALSE;
HACCEL hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_OOP10));
MSG msg;
// Main message loop:
while (GetMessage(&msg, nullptr, 0, 0)) {
if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg)) {
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
return (int)msg.wParam;
}
//
// FUNCTION: MyRegisterClass()
//
// PURPOSE: Registers the window class.
//
ATOM MyRegisterClass(HINSTANCE hInstance) {
WNDCLASSEXW wcex;
wcex.cbSize = sizeof(WNDCLASSEX);
wcex.style = CS_HREDRAW | CS_VREDRAW;
wcex.lpfnWndProc = WndProc;
wcex.cbClsExtra = 0;
wcex.cbWndExtra = 0;
wcex.hInstance = hInstance;
wcex.hIcon = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_OOP10));
wcex.hCursor = LoadCursor(nullptr, IDC_ARROW);
wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
wcex.lpszMenuName = MAKEINTRESOURCEW(IDC_OOP10);
wcex.lpszClassName = szWindowClass;
wcex.hIconSm = LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL));
return RegisterClassExW(&wcex);
}
//
// FUNCTION: InitInstance(HINSTANCE, int)
//
// PURPOSE: Saves instance handle and creates main window
//
// COMMENTS:
//
// In this function, we save the instance handle in a global variable and
// create and display the main program window.
//
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow) {
hInst = hInstance; // Store instance handle in our global variable
HWND hWnd = CreateWindowW(szWindowClass, L"Main Window", WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, nullptr, nullptr, hInstance, nullptr);
SetClassLong(hWnd, GCL_HBRBACKGROUND, (LONG)CreateSolidBrush(RGB(rand() % 256, rand() % 256, rand() % 256)));
if (!hWnd)
return FALSE;
ShowWindow(hWnd, nCmdShow);
UpdateWindow(hWnd);
windows[0] = hWnd;
return TRUE;
}
BOOL CreateChildWindow(HWND hWnd) {
_itoa(windowsCount + 1, (char*)buffer, 10);
SetClassLong(hWnd, GCL_HBRBACKGROUND, (LONG)CreateSolidBrush(RGB(rand() % 256, rand() % 256, rand() % 256)));
HWND childWnd = CreateWindow(szWindowClass, buffer, WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, windows[windowsCount - 1], nullptr, hInst, nullptr);
if (!childWnd)
return FALSE;
ShowWindow(childWnd, SW_SHOWDEFAULT);
UpdateWindow(childWnd);
windows[windowsCount++] = childWnd;
return TRUE;
}
//
// FUNCTION: WndProc(HWND, UINT, WPARAM, LPARAM)
//
// PURPOSE: Processes messages for the main window.
//
// WM_COMMAND - process the application menu
// WM_PAINT - Paint the main window
// WM_DESTROY - post a quit message and return
//
//
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) {
switch (message) {
case WM_LBUTTONUP:
{
if (windowsCount < 5) {
if (!CreateChildWindow(hWnd))
return FALSE;
}
}
break;
case WM_CLOSE:
{
if (IDOK == MessageBox(hWnd, L"Are you sure you want to quit?", L"You are leaving the program", MB_OKCANCEL | MB_ICONINFORMATION | MB_DEFBUTTON2)) {
if (windowsCount == 1) {
DestroyWindow(windows[--windowsCount]);
PostQuitMessage(NULL);
break;
}
else
DestroyWindow(windows[--windowsCount]);
}
}
break;
case WM_RBUTTONUP:
SetWindowText(hWnd, L"Changed title!");
break;
case WM_KEYDOWN: {
if (windowsCount == 1) {
DestroyWindow(windows[--windowsCount]);
PostQuitMessage(NULL);
break;
}
else
DestroyWindow(windows[--windowsCount]);
}
break;
case WM_COMMAND:
{
int wmId = LOWORD(wParam);
// Parse the menu selections:
switch (wmId)
{
case IDM_ABOUT:
DialogBox(hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, About);
break;
case IDM_EXIT:
DestroyWindow(hWnd);
break;
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
}
break;
case WM_PAINT:
{
PAINTSTRUCT ps;
HDC hdc = BeginPaint(hWnd, &ps);
// TODO: Add any drawing code that uses hdc here...
EndPaint(hWnd, &ps);
}
break;
/*case WM_DESTROY:
PostQuitMessage(0);
break;*/
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
return 0;
}
// Message handler for about box.
INT_PTR CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam) {
UNREFERENCED_PARAMETER(lParam);
switch (message) {
case WM_INITDIALOG:
return (INT_PTR)TRUE;
case WM_COMMAND:
if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL) {
EndDialog(hDlg, LOWORD(wParam));
return (INT_PTR)TRUE;
}
break;
}
return (INT_PTR)FALSE;
}
那些看起來不像孩子的窗戶。 –
您正在創建頂級窗口，它們之間沒有任何關係。如果要在銷燬另一個窗口時激活應用程序中的另一個頂級窗口，請先調用[SetActiveWindow]（https://msdn.microsoft.com/en-us/library/windows/desktop/ms646311.aspx），然後然後摧毀窗戶。有關更多信息，請參見[窗口功能：活動窗口]（https://msdn.microsoft.com/en-us/library/windows/desktop/ms632599.aspx#active）。 – IInspectable