Win32对话框工程笔记

Main.cpp

#include <Windows.h>
#include "resource.h"
INT_PTR CALLBACK dialogProc(HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
    if (WM_INITDIALOG == uMsg)
    {
        RECT rect;
        GetWindowRect(hwndDlg, &rect);
        int windowWidth = rect.right - rect.left;
        int windowHeight = rect.bottom - rect.top;
        int screenWidth = GetSystemMetrics(SM_CXSCREEN);
        int screenHeight = GetSystemMetrics(SM_CYSCREEN);
        MoveWindow(hwndDlg, (screenWidth - windowWidth) / 2, (screenHeight - windowHeight) / 2, windowWidth, windowHeight, FALSE);
        SetDlgItemText(hwndDlg, IDC_EDIT_CONTENT, TEXT("这是一个简单的示例！"));
        return TRUE;
    }
    else if (WM_CLOSE == uMsg)
    {
        EndDialog(hwndDlg, 0);
        return TRUE;
    }
    else if (WM_COMMAND == uMsg)
    {
        WORD controlId = LOWORD(wParam);
        switch (controlId)
        {
        case IDC_BUTTON_SAY:
        {
            TCHAR content[100];
            GetDlgItemText(hwndDlg, IDC_EDIT_CONTENT, content, 100);
            MessageBox(hwndDlg, content, TEXT("消息框"), MB_ICONINFORMATION);
        }
            break;
        case IDC_BUTTON_YES:
            EndDialog(hwndDlg, IDC_BUTTON_YES);
            break;
        case IDC_BUTTON_NO:
            EndDialog(hwndDlg, IDC_BUTTON_NO);
            break;
        }
        return TRUE;
    }
    return FALSE;
}
int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PWSTR pCmdLine, int nCmdShow)
{
    INT_PTR returnValue = DialogBox(hInstance, reinterpret_cast<const TCHAR *>(IDD_DIALOG_MAIN), nullptr, dialogProc);
    if (IDC_BUTTON_YES == returnValue)
    {
        MessageBox(nullptr, TEXT("You clicked the Yes button!"), TEXT("Message Box"), MB_ICONINFORMATION);
    }
    else if (IDC_BUTTON_NO == returnValue)
    {
        MessageBox(nullptr, TEXT("You clicked the No button!"), TEXT("Message Box"), MB_ICONINFORMATION);
    }
    else
    {
        MessageBox(nullptr, TEXT("You closed the dialog!"), TEXT("Message Box"), MB_ICONINFORMATION);
    }
    return 0;
}