Win32中对话框出现问题

问题描述

我需要一些帮助来使一些对话框正常工作.我以前从未做过对话框，现在我知道为什么避免使用它们了:\.首次创建主窗口时，我希望弹出一个对话框，要求用户提供一些信息.然后，当他们按下对话框上的连接"按钮时，我希望它关闭，并且我的程序可以开始它的生意.所以我在主windowproc的WM_CREATE:中有此内容:

i''m in need of some assistance getting some dialog boxes to bloody work properly. I''ve never done dialog boxes before, and i now know why i avoided them :\ . When my main window is first created, I want a dialog box to pop asking for some information from the user. Then, when they press the "Connect" button on the dialog box, i wish for it to close, and for my program to go about it''s business. So i have this in my WM_CREATE: of my main windowproc:

int ret = DialogBox(GetModuleHandle(NULL), MAKEINTRESOURCE(IDD_DIALOG1), hwnd, DlgProc);

效果很好，当我启动程序时，对话框打开，并让人员填写两个字段，一个用于服务器ip的ip控件，以及一个用于屏幕名的edit控件.这是dialogwindowproc，我确定一切都在这里进行:

which works fine, the dialog opens when i start the program, and lets the person fill in the two fields, an ip control for a server ip, and an edit control for a screenname. This is the dialogwindowproc, which i''m sure is where everything goes fubar:

BOOL CALLBACK DlgProc(HWND hwnd, UINT Message, WPARAM wParam, LPARAM lParam)
{
    switch(Message)
    {
        case WM_INITDIALOG:
        {
	      return TRUE;
	}
	case WM_COMMAND:
	{
            switch(LOWORD(wParam))
            {
                case IDC_BUTTON1:
		{
		     DWORD ipAddress = 0;
		     char * TempIp;
		     struct in_addr addr;

		     SendDlgItemMessage(hwnd, IDC_IPADDRESS1, IPM_GETADDRESS, 0, (lParam) &ipAddress);
		     addr.s_addr = (long)ipAddress;
		     TempIp = inet_ntoa(addr);
		     strcpy_s(ServerIp, TempIp);

		     GetDlgItemText(hwnd, IDC_EDIT1, username, 100);

		     SendMessage(mainWindow, WM_START_WINSOCK, 0, 0);
                     EndDialog(hwnd, IDOK);
		     return true;
		}
            }
	    break;
	}
        default:
            return FALSE;
    }
    return TRUE;
}

所以我想我正在做的是，当按下带有对话框ID IDC_BUTTON1的按钮时，它将首先通过IPM_GETADDRESS消息以DWORD的形式获取ip地址，然后我将其转换为char字符串，然后存储在全局变量"ServerIp".然后，我通过GetDlgItemText函数获取输入的用户名，并将其存储在全局TCHAR字符串用户名"中.然后，我发送一个用户定义的消息，该消息由我的主要WinProc处理，但是我不担心这种情况，因为它不会进一步传播.我以为结束对话框功能应该完全关闭对话框，但是它保持打开状态，而主窗口的其余部分在它后面弹出，由于对话框仍然处于打开状态，因此无法单击.然后，当我尝试再次单击连接"按钮以将其关闭时，我从MSVC ++ Express中收到未处理的异常"/访问冲突"错误，并且我的程序崩溃了.所以，我做错了.有人可以帮我吗?

So what i thought i was doing was, when the button with the dialog ID IDC_BUTTON1 was pressed, it would first grab the ip address in the form of DWORD via the IPM_GETADDRESS message, which i then convert to a char string and then store in a global variable ''ServerIp''. I then grab the entered username via the GetDlgItemText function and store it in the global TCHAR string, ''username''. I then send a user-defined message, which is handled by my main WinProc, but i''m not worried about that cause it doesn''t get any farther. I thought the end dialog function was supposed to close the dialog box entirely, but it just stays open, and the rest of my main window pops up behind it, which i can''t click on because the dialog box is still up. Then, when i try and click the Connect button again to close it, i get an "Unhandeled exception" / "Access Violation" error from MSVC++ express and my program crashes. so yeh, I''m doing this wrong. Can someone help me out?

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