Windows api msdn

The fileapi. Mixing usage of the encoding-neutral alias with code that not encoding-neutral can lead to mismatches that result in compilation or runtime errors.

For more information, see Conventions for Function Prototypes. Creating and Deleting Directories. Directory Management Functions. Skip to main content. This browser is no longer supported. Download Microsoft Edge More info. NET Framework programming model. We are trying to better understand customer views on social support experience, so your participation in this interview project would be greatly appreciated if you have time. Thanks for helping make community forums a great place.

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You can download, update or delete content on your own schedule. You may select the default location to store content on your computer at this time only. The content store location cannot be changed later. A handle to the owner window of the message box to be created. If this parameter is NULL , the message box has no owner window. The message to be displayed. The contents and behavior of the dialog box. This parameter can be a combination of flags from the following groups of flags.

Depending on the hierarchy of windows in the application, the user may be able to move to other windows within the thread. All child windows of the parent of the message box are automatically disabled, but pop-up windows are not. If the current input desktop is not the default desktop, MessageBox does not return until the user switches to the default desktop. Terminal Services: If the calling thread has an impersonation token, the function directs the message box to the session specified in the impersonation token.

This is so that the message box can appear on a desktop other than the desktop corresponding to the hWnd. For information on security considerations in regard to using this flag, see Interactive Services. In particular, be aware that this flag can produce interactive content on a locked desktop and should therefore be used for only a very limited set of scenarios, such as resource exhaustion.

If the function fails, the return value is zero. To get extended error information, call GetLastError. Sent when the browser makes the document visible due to navigation tasks, including not only when the page is first loaded, but also situations such as the user navigating back to the page after having navigated to another within the same tab.

Also available using the onpageshow event handler property. Fired when the active history entry changes. Also available using the onpopstate event handler property. Fired when the window, the document and its resources are about to be unloaded.

Also available via the onbeforeunload property. Fired when the document has been completely loaded and parsed, without waiting for stylesheets, images, and subframes to finish loading. Fired when the whole page has loaded, including all dependent resources such as stylesheets images.

Also available via the onload property. Fired when the document or a child resource is being unloaded. Also available via the onunload property.

Fired when the browser has successfully installed a page as an application. Also available via the onappinstalled property. Fired when a user is about to be prompted to install a web application. Also available via the onbeforeinstallprompt property. Fired when the window receives a message, for example from a call to Window. Also available via the onmessage property.

Fired when a Window object receives a message that can't be deserialized. Also available via the onmessageerror property. Fired after the associated document has started printing or the print preview has been closed. Also available via the onafterprint property.

Fired when the associated document is about to be printed or previewed for printing. Also available via the onbeforeprint property. Sent every time a JavaScript Promise is rejected, regardless of whether or not there is a handler in place to catch the rejection.

Also available through the onrejectionhandled event handler property. Sent when a JavaScript Promise is rejected but there is no handler in place to catch the rejection.

Also available using the onunhandledrejection event handler property. Fired when a CSS transition is canceled. Also available via the ontransitioncancel property. Fired when a CSS transition has completed. Also available via the ontransitionend property. Fired when a CSS transition is first created. Also available via the ontransitionrun property.

Fired when a CSS transition has actually started. Also available via the ontransitionstart property. Fired when a VR display becomes available to be presented to, for example if an HMD has been moved to bring it out of standby, or woken up by being put on.

Also available via the onvrdisplayactivate property. Also available via the onvrdisplayblur property. Fired when a compatible VR display is connected to the computer. Also available via the onvrdisplayconnect property.

Fired when a VR display can no longer be presented to, for example if an HMD has gone into standby or sleep mode due to a period of inactivity. Also available via the onvrdisplaydeactivate property.

Fired when a compatible VR display is disconnected from the computer. Also available via the onvrdisplaydisconnect property. Fired when presentation to a VR display has resumed after being blurred. Also available via the onvrdisplayfocus property. Fired when the presenting state of a VR display changes — i. Also available via the onvrdisplaypresentchange property. Fired when the VR display's pointer input is restricted to consumption via a pointerlocked element.

Also available via the onvrdisplaypointerrestricted property. Fired when the VR display's pointer input is no longer restricted to consumption via a pointerlocked element. Also available via the onvrdisplaypointerunrestricted property. See also the DOM Interfaces.