Create a child popup window of the specified parent window.
int offset_x, int offset_y, int w, int h, Uint32 flags);SDL_Window* SDL_CreatePopupWindow(SDL_Window *parent,
|parent||the parent of the window, must not be NULL|
|offset_x||the x position of the popup window relative to the origin of the parent|
|offset_y||the y position of the popup window relative to the origin of the parent window|
|w||the width of the window|
|h||the height of the window|
|flags||SDL_WINDOW_TOOLTIP or SDL_WINDOW_POPUP MENU, and zero or more additional SDL_WindowFlags OR'd together.|
Returns the window that was created or NULL on failure; call SDL_GetError() for more information.
'flags' must contain exactly one of the following: - 'SDL_WINDOW_TOOLTIP': The popup window is a tooltip and will not pass any input events. - 'SDL_WINDOW_POPUP_MENU': The popup window is a popup menu. The topmost popup menu will implicitly gain the keyboard focus.
The following flags are not relevant to popup window creation and will be ignored:
The parent parameter must be non-null and a valid window. The parent of a popup window can be either a regular, toplevel window, or another popup window.
Popup windows cannot be minimized, maximized, made fullscreen, raised, flash, be made a modal window, be the parent of a modal window, or grab the mouse and/or keyboard. Attempts to do so will fail.
Popup windows implicitly do not have a border/decorations and do not appear on the taskbar/dock or in lists of windows such as alt-tab menus.
If a parent window is hidden, any child popup windows will be recursively hidden as well. Child popup windows not explicitly hidden will be restored when the parent is shown.
If the parent window is destroyed, any child popup windows will be recursively destroyed as well.
This function is available since SDL 3.0.0.