From 077ff83b6e27dad47c654f6d732fb03618f07748 Mon Sep 17 00:00:00 2001 From: Simon Krauter Date: Tue, 6 Mar 2018 11:58:43 +0100 Subject: [PATCH] Fixes #7212, now with better code (#7302) When platform is Windows and app type is GUI, an error about missing DLL file is displayed as message box in addition to the console output, which is usually not visible. --- lib/system/dyncalls.nim | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/lib/system/dyncalls.nim b/lib/system/dyncalls.nim index c8e251d1e6..f1ff307da1 100644 --- a/lib/system/dyncalls.nim +++ b/lib/system/dyncalls.nim @@ -31,6 +31,13 @@ proc nimLoadLibraryError(path: string) = stderr.rawWrite("\n") when not defined(nimDebugDlOpen) and not defined(windows): stderr.rawWrite("compile with -d:nimDebugDlOpen for more information\n") + when defined(windows) and defined(guiapp): + # Because console output is not shown in GUI apps, display error as message box: + const prefix = "could not load: " + var msg: array[1000, char] + copyMem(msg[0].addr, prefix.cstring, prefix.len) + copyMem(msg[prefix.len].addr, path.cstring, min(path.len + 1, 1000 - prefix.len)) + discard MessageBoxA(0, msg[0].addr, nil, 0) quit(1) proc procAddrError(name: cstring) {.noinline.} =