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a comment explaining foreground issues

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git-svn-id: https://svn.code.sf.net/p/nsis/code/NSIS/trunk@5916 212acab6-be3b-0410-9dea-997c60f758d6
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kichik 2009-02-01 12:35:28 +00:00
parent 130074428e
commit a4010c1d54
1 changed files with 13 additions and 0 deletions
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13
Contrib/Banner/Banner.c
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@ -72,6 +72,19 @@ DWORD WINAPI BannerThread(LPVOID lpParameter)
HWND hwndParent = (HWND) lpParameter;
HWND lhwBanner;
// This right here is the mother of all evils when it comes to
// foreground windows. The dialog is created in another thread
// and there can only be one thread holding the right to set the
// foreground window. So long as this thread exists and has an
// active window, another thread from the same process can steal
// its thunder. But if the window and the thread are destroyed,
// the foreground rights pass on to another process. To avoid
// this situation that could cause the installer to show up on
// the background if Banner is used in .onInit, we don't let
// CreateDialog show the window and instead do this in the
// original thread. This is done by not specifying WS_VISIBLE
// for IDD_VERIFY.
lhwBanner = CreateDialog(
GetModuleHandle(0),
MAKEINTRESOURCE(IDD_VERIFY),