Windows: always display random gathering dialog when UserEnrichRandomPool is called instead of once per application run. This is implemented through the call SetRandomPoolEnrichedByUserStatus(FALSE) at the begining of sensitive operations instead of changing UserEnrichRandomPool because in the same call there can be many calls to UserEnrichRandomPool which can result in displaying the dialog many times.

src/Common/BootEncryption.cpp

@@ -1290,6 +1290,9 @@ namespace VeraCrypt
 		if (Randinit() != ERR_SUCCESS)
 			throw ParameterIncorrect (SRC_POS);
 
+		/* force the display of the random enriching dialog */
+		SetRandomPoolEnrichedByUserStatus (FALSE);
+
 		UserEnrichRandomPool (ParentWindow);
 
 		if (!RandgetBytes (request.WipeKey, sizeof (request.WipeKey), TRUE))
@@ -2175,6 +2178,9 @@ namespace VeraCrypt
 		throw_sys_if (Randinit () != 0);
 		finally_do ({ RandStop (FALSE); });
 
+		/* force the display of the random enriching dialog */
+		SetRandomPoolEnrichedByUserStatus (FALSE);
+
 		NormalCursor();
 		UserEnrichRandomPool (ParentWindow);
 		WaitCursor();

src/Common/Password.c

@@ -232,6 +232,8 @@ int ChangePwd (const char *lpszVolume, Password *oldPassword, Password *newPassw
 	if (Randinit ())
 		goto error;
 
+	SetRandomPoolEnrichedByUserStatus (FALSE); /* force the display of the random enriching dialog */
+
 	if (!bDevice && bPreserveTimestamp)
 	{
 		if (GetFileTime ((HANDLE) dev, &ftCreationTime, &ftLastAccessTime, &ftLastWriteTime) == 0)

src/Mount/Mount.c

@@ -7652,6 +7652,9 @@ noHidden:
 		goto error;
 	}
 
+	/* force the display of the random enriching dialog */
+	SetRandomPoolEnrichedByUserStatus (FALSE);
+
 	NormalCursor();
 	UserEnrichRandomPool (hwndDlg);
 	WaitCursor();
@@ -7807,6 +7810,9 @@ int RestoreVolumeHeader (HWND hwndDlg, const char *lpszVolume)
 	OpenVolumeContext volume;
 	volume.VolumeIsOpen = FALSE;
 
+	/* force the display of the random enriching dialog */
+	SetRandomPoolEnrichedByUserStatus (FALSE);
+
 	WaitCursor();
 
 	if (restoreInternalBackup)