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// Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
// SPDX-License-Identifier: BSD-3-Clause
#include <QApplication>
#include <QLineEdit>
#include <QMainWindow>
#include <QMenuBar>
#include <QMessageBox>
#include <QStatusBar>
#include <QVBoxLayout>
#include <qwinhost.h>
#include <windows.h>
class HostWindow : public QWinHost
{
Q_OBJECT
public:
HostWindow(QWidget *parent = 0, Qt::WindowFlags f = 0)
: QWinHost(parent, f)
{
setFocusPolicy(Qt::StrongFocus);
}
HWND createWindow(HWND parent, HINSTANCE instance)
{
static ATOM windowClass = 0;
if (!windowClass) {
WNDCLASSEX wcex;
wcex.cbSize = sizeof(WNDCLASSEX);
wcex.style = CS_HREDRAW | CS_VREDRAW;
wcex.lpfnWndProc = (WNDPROC)WndProc;
wcex.cbClsExtra = 0;
wcex.cbWndExtra = 0;
wcex.hInstance = instance;
wcex.hIcon = NULL;
wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
wcex.lpszMenuName = NULL;
wcex.lpszClassName = L"qtest";
wcex.hIconSm = NULL;
windowClass = RegisterClassEx(&wcex);
}
HWND hwnd = CreateWindow((TCHAR*)windowClass, 0, WS_CHILD|WS_CLIPSIBLINGS|WS_TABSTOP,
CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, parent, NULL, instance, NULL);
return hwnd;
}
signals:
void message(const QString &msg, int timeout);
public slots:
void returnPressed()
{
QMessageBox::information(topLevelWidget(), "Message from Qt", "Return pressed in QLineEdit!");
}
protected:
static LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
QWidget *widget = QWidget::find((WId)GetParent(hWnd));
HostWindow *window = qobject_cast<HostWindow*>(widget);
if (window) switch (message) {
case WM_SETFOCUS:
window->message("SetFocus for Win32 window!", 1000);
break;
case WM_KILLFOCUS:
window->message("KillFocus for Win32 window!", 1000);
break;
case WM_MOUSEMOVE:
window->message("Moving the mouse, aren't we?", 200);
break;
case WM_KEYDOWN:
if (wParam != VK_TAB)
window->message("Key Pressed!", 500);
break;
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
return 0;
}
};
#include "main.moc"
int main(int argc, char **argv)
{
QApplication a(argc, argv);
QMainWindow mw;
mw.menuBar()->addMenu("&File")->addAction("&Exit", &a, SLOT(quit()));
QWidget central(&mw);
QLineEdit edit(¢ral);
HostWindow host(¢ral);
QObject::connect(&host, SIGNAL(message(const QString&,int)), mw.statusBar(), SLOT(showMessage(const QString&,int)));
QObject::connect(&edit, SIGNAL(returnPressed()), &host, SLOT(returnPressed()));
QVBoxLayout vbox(¢ral);
vbox.addWidget(&edit);
vbox.addWidget(&host);
mw.setCentralWidget(¢ral);
mw.show();
return a.exec();
}
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