vc下简单的计算器实现

做这个东西之前一直很鄙视微软的东西，我想应该是跟着网上一些说法有关，所以一直搞着linux的东西，但是发现自己还没有鄙视的资本，只有高手才有，所以从零开始先搞一下vc做一些工具游戏之类的。存在及合理，还没有到否定这些技术的境界。

win32对话框开发的很小的计算器程序。

代码如下：

BOOL WINAPI Main_Proc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
    switch(uMsg)
    {
        HANDLE_MSG(hWnd, WM_INITDIALOG, Main_OnInitDialog);
        HANDLE_MSG(hWnd, WM_COMMAND, Main_OnCommand);
        HANDLE_MSG(hWnd,WM_CLOSE, Main_OnClose);
    }

    return FALSE;
}

BOOL Main_OnInitDialog(HWND hwnd, HWND hwndFocus, LPARAM lParam)
{
    HWND hwnd1 = GetDlgItem(hwnd,IDC_COMBO1);
    ComboBox_InsertString(hwnd1,-1,TEXT("+"));
    ComboBox_InsertString(hwnd1,-1,TEXT("-"));
    ComboBox_InsertString(hwnd1,-1,TEXT("*"));
    ComboBox_InsertString(hwnd1,-1,TEXT("/"));
    return TRUE;
}

void Main_OnCommand(HWND hwnd, int id, HWND hwndCtl, UINT codeNotify)
{
    switch(id)
    {
        case IDC_OK:
        {
        TCHAR str1[256];
        TCHAR str2[256];
        GetDlgItemText(hwnd,IDC_EDIT1,str1,sizeof(str1));
        GetDlgItemText(hwnd,IDC_EDIT2,str2,sizeof(str2));
        int i1 = atoi(str1);
        int i2 = atoi(str2);
        int i3 = 0;
        HWND hwnd1 = GetDlgItem(hwnd,IDC_COMBO1);
        int ret = ComboBox_GetCurSel(hwnd1);
        switch(ret)
        {
        case 0:
        {
            i3 = i1 + i2;
        }
        break;
        case 1:
        {
            i3 = i1 - i2;
        }
        break;
        case 2:
        {
            i3 = i1 * i2;
        }
        break;
        case 3:
        {
            i3 = i1 / i2;
        }
        break;
        }
        TCHAR str3[256];
        itoa(i3,str3,10);
        SetDlgItemText(hwnd,IDC_EDIT3,str3);
        }
        break;
        default:
        break;
    }
}

void Main_OnClose(HWND hwnd)
{
    EndDialog(hwnd, 0);
}

运行结果：