WS_EX_ACCEPTFILES Specifies that a window created with this style accepts drag-and-drop files.WS_EX_APPWINDOW Forces a top-level window onto the taskbar when the window is visible.WS_EX_CLIENTEDGE Specifies that a window has a 3D look that is, a border with a sunken edge.WS_EX_CONTEXTHELP Includes a question mark in the title bar of the window. When the user clicks the question mark, the cursor changes to a question mark with a pointer. If the user then clicks a child window, the child receives a WM_HELP message.WS_EX_CONTROLPARENT Allows the user to navigate among the child windows of the window by using the TAB key.WS_EX_DLGMODALFRAME Designates a window with a double border that may (optionally) be created with a title bar when you specify the WS_CAPTION style flag in the dwStyle parameter.WS_EX_LEFT Gives window generic left-aligned properties. This is the default.WS_EX_LEFTSCROLLBAR Places a vertical scroll bar to the left of the client area.WS_EX_LTRREADING Displays the window text using left-to-right reading order properties. This is the default.WS_EX_MDICHILD Creates an MDI child window.WS_EX_NOPARENTNOTIFY Specifies that a child window created with this style will not send the WM_PARENTNOTIFY message to its parent window when the child window is created or destroyed.WS_EX_OVERLAPPEDWINDOW Combines the WS_EX_CLIENTEDGE and WS_EX_WINDOWEDGE styles WS_EX_PALETTEWINDOW Combines the WS_EX_WINDOWEDGE and WS_EX_TOPMOST styles.WS_EX_RIGHT Gives a window generic right-aligned properties. This depends on the window class.WS_EX_RIGHTSCROLLBAR Places a vertical scroll bar (if present) to the right of the client area. This is the default.WS_EX_RTLREADING Displays the window text using right-to-left reading order properties.WS_EX_STATICEDGE Creates a window with a three-dimensional border style intended to be used for items that do not accept user input.WS_EX_TOOLWINDOW Creates a tool window, which is a window intended to be used as a floating toolbar. A tool window has a title bar that is shorter than a normal title bar, and the window title is drawn using a smaller font. A tool window does not appear in the task bar or in the window that appears when the user presses ALT+TAB.WS_EX_TOPMOST Specifies that a window created with this style should be placed above all nontopmost windows and stay above them even when the window is deactivated. An application can use the SetWindowPos member function to add or remove this attribute.WS_EX_TRANSPARENT Specifies that a window created with this style is to be transparent. That is, any windows that are beneath the window are not obscured by the window. A window created with this style receives WM_PAINT messages only after all sibling windows beneath it have been updated.WS_EX_WINDOWEDGE Specifies that a window has a border with a raised edge.WS_EX_ACCEPTFILES 指明用这个风格创建的窗口能够接受拖放文件。WS_EX_CLIENTEDGE 指明窗口具有3D外观，这意味着，边框具有下沉的边界。WS_EX_CONTEXTHELP 在窗口的标题条中包含问号。当用户单击问号时，鼠标光标的形状变为带指针的问号。如果用户随后单击一个子窗口，子窗口将接收到一个WM_HELP消息。 WS_EX_CONTROLPARENT 允许用户用TAB键遍历窗口的子窗口。 WS_EX_DLGMODALFRAME 指明一个具有双重边界的窗口，当你在dwStyle参数中指定了WS_CAPTION风格标志时，它可以具有标题条（可选）。 WS_EX_LEFT 指定窗口具有左对齐属性。这是缺省值。 WS_EX_LEFTSCROLLBAR 将垂直滚动条放在客户区的左边。 WS_EX_LTRREADING 按照从左到右的方式显示窗口文本。这是缺省方式。 WS_EX_MDICHILD 创建一个MDI子窗口。 WS_EX_NOPARENTNOTIFY 指定用这个风格创建的子窗口在被创建或销毁的时候将不向父窗口发送WM_PARENTNOTIFY消息。 WS_EX_OVERLAPPEDWINDOW 组合了WS_EX_CLIENTEDGE和WS_EX_WIND-OWEDGE风格。 WS_EX_PALETTEWINDOW 组合了WS_EX_WINDOWEDGE和WS_EX_TOPMOST风格。 WS_EX_RIGHT 赋予窗口右对齐属性。这与窗口类有关。 WS_EX_RIGHTSCROLLBAR 将垂直滚动条（如果有）放在客户区的右边。这是缺省方式。 WS_EX_RTLREADING 按照从右到左的顺序显示窗口文本。 WS_EX_STATICEDGE 创建一个具有三维边界的窗口，用于不接受用户输入的项。 WS_EX_TOOLWINDOW 创建一个工具窗口，目的是被用作浮动工具条。工具窗口具有标题条，比通常的标题条要短，窗口的标题是用小字体显示的。工具窗口不出现在任务条或用户按下ALT+TAB时出现的窗口中。 WS_EX_TOPMOST 指定用这个风格创建的窗口必须被放在所有非顶层窗口的上面，即使这个窗口已经不处于激活状态，它还是保留在最上面。应用程序可以用SetWindowsPos成员函数来加入或去掉这个属性。 WS_EX_TRANSPARENT 指定了用这个风格创建的窗口是透明的。这意味着，在这个窗口下面的任何窗口都不会被这个窗口挡住。用这个风格创建的窗口只有当它下面的窗口都更新过以后才接收WM_PAINT消息。 WS_EX_WINDOWEDGE 指定了具有凸起边框的窗口。