Qt-透明窗体之嵌入桌面内
1 QT += core gui
2
3 greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
4
5 CONFIG += c++11
6
7 # The following define makes your compiler emit warnings if you use
8 # any Qt feature that has been marked deprecated (the exact warnings
9 # depend on your compiler). Please consult the documentation of the
10 # deprecated API in order to know how to port your code away from it.
11 DEFINES += QT_DEPRECATED_WARNINGS
12
13 # You can also make your code fail to compile if it uses deprecated APIs.
14 # In order to do so, uncomment the following line.
15 # You can also select to disable deprecated APIs only up to a certain version of Qt.
16 #DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0
17
18 SOURCES += \
19 main.cpp \
20 windowDesktop.cpp
21
22 HEADERS += \
23 windowDesktop.h
24
25 FORMS += \
26 mainwindow.ui
27
28 LIBS += -lUser32
29
30 # Default rules for deployment.
31 qnx: target.path = /tmp/$${TARGET}/bin
32 else: unix:!android: target.path = /opt/$${TARGET}/bin
33 !isEmpty(target.path): INSTALLS += target
34
35 RESOURCES += \
36 resource.qrc
main.cpp
1 #include <windows.h>
2 #include <winuser.h>
3 #include <QApplication>
4 #include "windowDesktop.h"
5
6 BOOL enumUserWindowsCB(HWND hwnd,LPARAM lParam)
7 {
8 long wflags = GetWindowLong(hwnd, GWL_STYLE);
9 if(!(wflags & WS_VISIBLE)) return TRUE;
10
11 HWND sndWnd;
12 if( !(sndWnd=FindWindowEx(hwnd, NULL, L"SHELLDLL_DefView", NULL)) ) return TRUE;
13 HWND targetWnd;
14 if( !(targetWnd=FindWindowEx(sndWnd, NULL, L"SysListView32", L"FolderView")) ) return TRUE;
15
16 HWND* resultHwnd = (HWND*)lParam;
17 *resultHwnd = targetWnd;
18 return FALSE;
19 }
20
21 HWND findDesktopIconWnd()
22 {
23 HWND resultHwnd = NULL;
24 EnumWindows((WNDENUMPROC)enumUserWindowsCB, (LPARAM)&resultHwnd);
25 return resultHwnd;
26 }
27
28 int main(int argc, char *argv[])
29 {
30 QApplication a(argc, argv);
31
32 Dialog w;
33 HWND desktopHwnd = findDesktopIconWnd();
34 if (desktopHwnd)
35 SetParent((HWND)w.winId(), desktopHwnd);
36 w.setFixedSize(QSize(800, 400));
37 w.show();
38 return a.exec();
39 }
windowDesktop.h
1 #ifndef WINDOWDESKTOP_H
2 #define WINDOWDESKTOP_H
3
4 #include "QObject"
5 #include "QDialog"
6 #include "QLineEdit"
7 #include "QPainter"
8 #include "QWidget"
9 #include "QBitmap"
10
11 class Dialog : public QWidget
12 {
13 Q_OBJECT
14 public :
15 Dialog(QWidget *parent = 0);
16 ~Dialog();
17
18 virtual void paintEvent(QPaintEvent *event);
19 };
20
21
22 #endif // WINDOWDESKTOP_H
1 #include "windowDesktop.h"
2
3 Dialog::Dialog(QWidget *parent)
4 : QWidget(parent)
5 {
6 // 创建个LineEdit用来测试焦点
7 QLineEdit *le = new QLineEdit(this);
8 }
9
10 Dialog::~Dialog()
11 {
12 }
13
14 void Dialog::paintEvent(QPaintEvent *event)
15 {
16 QPainter p(this);
17 p.fillRect(rect(), QColor(0, 0xff, 0, 33));
18 return;
19 }
