C++ 使用 CreateWindowEx 制作仅消息窗口
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/4081334/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Using CreateWindowEx to Make a Message-Only Window
提问by Jim Fell
I'm trying to use CreateWindowExto generate a message-only window:
我正在尝试用于CreateWindowEx生成仅消息窗口：
_hWnd = CreateWindowEx( 0, NULL, NULL, 0, 0, 0, 0, 0, HWND_MESSAGE, NULL, NULL, NULL );
When my application executes this line it always returns _hWnd = 0. What am I doing wrong?
当我的应用程序执行这一行时，它总是返回_hWnd = 0. 我究竟做错了什么？
回答by Kirill V. Lyadvinsky
lpClassNameshouldn't be NULL. Register class using RegisterClassExfunction and pass it to CreateWindowEx.
lpClassName不应该NULL。使用RegisterClassEx函数注册类并将其传递给CreateWindowEx.
static const char* class_name = "DUMMY_CLASS";
WNDCLASSEX wx = {};
wx.cbSize = sizeof(WNDCLASSEX);
wx.lpfnWndProc = pWndProc; // function which will handle messages
wx.hInstance = current_instance;
wx.lpszClassName = class_name;
if ( RegisterClassEx(&wx) ) {
CreateWindowEx( 0, class_name, "dummy_name", 0, 0, 0, 0, 0, HWND_MESSAGE, NULL, NULL, NULL );
}
回答by Cheers and hth. - Alf
According to the Microsoft docsthe class name should be "Message".
根据Microsoft 文档，类名应该是“Message”。
Cheers & hth.,
干杯 & hth.,
