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Service periodic callbacks on Windows while MAME debugger is active - Issue #14600 #14603

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Service periodic callbacks on Windows while MAME debugger is active - Issue #14600 #14603

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2504619
Fix for #14600
taylorza Nov 30, 2025
d64dde2
Ensuring pending messages are serviced
taylorza Nov 30, 2025
4d6a41c
Merge branch 'mamedev:master' into windows-message-pump
taylorza Dec 1, 2025
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32 changes: 17 additions & 15 deletions src/osd/modules/debugger/debugwin.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -206,23 +206,25 @@ void debugger_windows::wait_for_debugger(device_t &device, bool firststop)

// get and process messages
MSG message;
GetMessage(&message, nullptr, 0, 0);

switch (message.message)
if (PeekMessage(&message, nullptr, 0, 0, PM_REMOVE))
{
// check for F10 -- we need to capture that ourselves
case WM_SYSKEYDOWN:
case WM_SYSKEYUP:
if (message.wParam == VK_F4 && message.message == WM_SYSKEYDOWN)
SendMessage(GetAncestor(GetFocus(), GA_ROOT), WM_CLOSE, 0, 0);
if (message.wParam == VK_F10)
SendMessage(GetAncestor(GetFocus(), GA_ROOT), (message.message == WM_SYSKEYDOWN) ? WM_KEYDOWN : WM_KEYUP, message.wParam, message.lParam);
break;

// process everything else
default:
winwindow_dispatch_message(*m_machine, message);
break;
switch (message.message)
{
// check for F10 -- we need to capture that ourselves
case WM_SYSKEYDOWN:
case WM_SYSKEYUP:
if (message.wParam == VK_F4 && message.message == WM_SYSKEYDOWN)
SendMessage(GetAncestor(GetFocus(), GA_ROOT), WM_CLOSE, 0, 0);
if (message.wParam == VK_F10)
SendMessage(GetAncestor(GetFocus(), GA_ROOT), (message.message == WM_SYSKEYDOWN) ? WM_KEYDOWN : WM_KEYUP, message.wParam, message.lParam);
break;

// process everything else
default:
winwindow_dispatch_message(*m_machine, message);
break;
}
}

// mark the debugger as active
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