mirror of
https://github.com/Alia5/GlosSI.git
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47 lines
1.7 KiB
C++
47 lines
1.7 KiB
C++
/*
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Copyright 2021-2022 Peter Repukat - FlatspotSoftware
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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#pragma once
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#include <QAbstractNativeEventFilter>
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#include <QString>
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#define NOMINMAX
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#include <Windows.h>
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class WinEventFilter : public QAbstractNativeEventFilter {
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public:
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WinEventFilter() = default;
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/*
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* When having the DWM frame fully extended into client area
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* ever since WIN10 a 6px border is displayed on top.
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* to remove that one has to catch the WM_NCCALCSIZE event and re-calculate the window-rect
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* https://stackoverflow.com/a/2135120/5106063
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* https://docs.microsoft.com/en-us/windows/win32/dwm/customframe
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*/
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bool nativeEventFilter(const QByteArray& eventType, void* message, qintptr* result) override
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{
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if (QString(eventType) == "windows_generic_MSG") {
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auto msg = static_cast<MSG*>(message)->message;
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auto lParam = static_cast<MSG*>(message)->lParam;
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auto hwnd = static_cast<MSG*>(message)->hwnd;
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if (msg == WM_NCCALCSIZE) {
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auto sz = reinterpret_cast<LPNCCALCSIZE_PARAMS>(lParam);
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sz->rgrc[0].top -= 6;
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}
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}
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return false;
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}
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};
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