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tune GetRootWindow to return the number of windows

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Vincent Wei
2020-03-04 22:52:36 +08:00
parent 5224e31084
commit 5812c11f7c
2 changed files with 10 additions and 4 deletions
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9
include/window.h
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@@ -8463,8 +8463,8 @@ MG_EXPORT LINT GUIAPI GetWindowId (HWND hWnd);
MG_EXPORT LINT GUIAPI SetWindowId (HWND hWnd, LINT lNewId);
/**
* \fn HWND GUIAPI GetRootWindow (void)
* \brief Retrieve the root window of current thread.
* \fn HWND GUIAPI GetRootWindow (int* nrWins)
* \brief Retrieve the root window of the current thread.
*
* All main windows and/or virtual windows in a thread form a window tree.
* The root window of the tree may be HWND_DESKTOP or the first main/virtual
@@ -8472,13 +8472,16 @@ MG_EXPORT LINT GUIAPI SetWindowId (HWND hWnd, LINT lNewId);
*
* This function retrieves and returns the root window in the current thread.
*
* \param nrWins A pointer to an integer used to return the number of total
* windows in the current thread. It can be NULL.
*
* \return The handle to the root window. If the current thread is not
* a message thread, it returns HWND_INVALID. If there is no
* any window created in the current thread, it returns HWND_NULL.
*
* \sa GetHosting, GetFirstHosted, GetNextHosted, GetMainWindowById
*/
MG_EXPORT HWND GUIAPI GetRootWindow (void);
MG_EXPORT HWND GUIAPI GetRootWindow (int* nrWins);
/**
* \fn HWND GUIAPI GetHosting (HWND hWnd)