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Add high DPI support for native window #20

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Add high DPI support for native window #20

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17 changes: 15 additions & 2 deletions qtwinmigrate/src/qwinhost.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,7 @@
#include "qwinhost.h"

#include <QEvent>
#include <QScreen>
#include <qt_windows.h>

#if QT_VERSION >= 0x050000
Expand Down Expand Up @@ -270,7 +271,13 @@ void QWinHost::showEvent(QShowEvent *e)
QWidget::showEvent(e);

if (hwnd)
SetWindowPos(hwnd, HWND_TOP, 0, 0, width(), height(), SWP_SHOWWINDOW);
{
// High DPI Support
qreal dpr = this->screen()->devicePixelRatio();
qreal w = width() * dpr;
qreal h = height() * dpr;
SetWindowPos(hwnd, HWND_TOP, 0, 0, (int)w, (int)h, SWP_SHOWWINDOW);
}
}

/*!
Expand All @@ -292,7 +299,13 @@ void QWinHost::resizeEvent(QResizeEvent *e)
QWidget::resizeEvent(e);

if (hwnd)
SetWindowPos(hwnd, HWND_TOP, 0, 0, width(), height(), 0);
{
// High DPI Support
qreal dpr = this->screen()->devicePixelRatio();
qreal w = width() * dpr;
qreal h = height() * dpr;
SetWindowPos(hwnd, HWND_TOP, 0, 0, (int)w, (int)h, 0);
}
}

/*!
Expand Down