I try to ask not to localized, because I think many other wxWidgets users will stumble about this problem or a similar one.
I try to get a wxStaticBitmap (original a PNG-Image) in a GUI, I will try to model it:
text text text
text text text
IMAGE
text
text
How I can do this? When I try:
wxBitmap bild(_T("Bild.png"), wxBITMAP_TYPE_PNG);
wxStaticBitmap *image = new wxStaticBitmap(this, wxID_ANY,
wxBitmap("Bild.png", wxBITMAP_TYPE_PNG),
wxPoint(100,100),
wxSize(bild.GetWidth(), bild.GetHeight()));
The image will take over the hole window, even the wxNotebook, which contains the wxPanel, will disabled and I have only the image, but nothing else...
I want to get the image in the third row of the VerticalBox. Is there any way to make this happend?
-Casisto
(wxW: 2.9.4; C++-Compiler: g++)
There is nothing special about wxStaticBitmap and you absolutely don't need to put it inside a panel. You do need to create it with the correct parent, if this in your example refers to wxFrame, it's not going to work if you then put it inside a wxPanel sizer, for example.
P.S. Do get rid of _T in your code, it's completely unnecessary in 2.9+. You also probably don't want to load the bitmap twice...
Ok, i found the answer myself:
I've to use a "subpanel" which will be the parent of the StaticBitmap
so it's this structur:
panel << vbox << Text
vbox << panel_2 << Image
vbox << Text
Related
One of my dialog window's title is shortened (like "My Dialogt..."). If the dialog was slightly wider, the whole title would be completely displayed, which would look nicer.
It seems as if there is no setting in Qt to do that. I have found a hack for a QMessageBox here: Can QMessageBox::about adjust size to title length?, but it is not general. For example it would have to take also the sizes of the icons to the left and to the right of the window title into account to compute a really good minimal size where still the title is completely shown.
Is there a general way to accomplish that? Is there also a simple way to do that? Or is this overengineering?
Not only this goal is questionable (see vahanco comment) but it is hard to achieve, because the window title bar is not Qt territory at all: apart from being able to set its text and manage to show or hide close/min/max button using window flags, there is little else in control, there.
By the way, a very raw way to set a dialog minimum width which could (could) make room to the whole text is the following:
const QString text = "Very very very very very very very very very very very very very long window title";
setWindowTitle(text);
QFontMetrics metrics(font(), this);
setMinimumWidth( metrics.horizontalAdvance(text));
This won't work out of the box, and it's very likely that the text stay cut, because the font used is supposed to be the same used in the title bar (which usually isn't) and we're not taking into account the frame width, the icon width, the title bar buttons width, and everything else which is owned by the window manager and is totally unknown to Qt.
So, you can figure out how much extra space is needed by all these stuff, and adjust the width with a totally arbitrary extra padding like
setMinimumWidth( metrics.horizontalAdvance(text) + 256);
and maybe get what you wanted in the first place (if you still really want it).
The accepted answer did not work for me.
The below code works in QT 5.15. According to the documentation after you call setMinumumWidth() you must call updateGeometry() update geometry docs. Setting minimumWidth should update the sizeHint. That was not happening for me. Also QFontMetrics::horizontalAdvance was not returning the width of the text. I had to use QFontMetrics::boundingRect({title_string}).width().
Calling resize on the dialog is what finally got it working for me. If the accepted answer doesn't work for you give this a try.
QString message = "Message for the user";
QInputDialog dialog = QInputDialog(this);
dialog.setLabelText(message);
QString longTitle = QString("Super long test title for making sure the widget will show all of the stupid long title.");
dialog.setWindowTitle(longTitle);
dialog.setInputMode(QInputDialog::TextInput);
auto fontMetrics = dialog.fontMetrics();
auto width = fontMetrics.boundingRect(longTitle).width();
dialog.resize(width + 200, dialog.rect().height());
const int ret = dialog.exec();
i do have two Labels in my applications. They are both in each tab. Now i want to witch between those labels by using an pointer that switchs between those labels when tab was changed.
my ui_mainwindow.h defines:
ProLabel *imageLabel;
ProLabel *imageLabel_1;
ProLabel *imageLabel_2;
but only imageLabel_1 and imageLabel_2 are shown in the GUI. I added a third Label (imageLabel) to use it as a variable to switch between the Labels (1/2). So I wrote follwing code in a slot which proves tab changed. So if tab is changed, the other imageLabel_1/2 (pointer) should be used in the hole code, when it says: imageLabel.
my slot when tab changed:
if(tab == 0)
{
this->ui->imageLabel = this->ui->imageLabel_1;
}
else{
this->ui->imageLabel = this->ui->imageLabel_2;
}
I also set the imageLabel_1 whe MainWindow is created. The Window disapear like normal. But if I try to load an image (than it should display the image in the imageLabel) it crashes.
Don't know if it was understandable. Does anybody has an idea if i can handle the pointers like that.. or how to do it different?
Thank you!
Two simpler ways: 1) Change the label contents, either the image or the text it contains, or 2) set the label to hidden with ui->label2->isVisible(false).
refBuilder->get_widget("image1", image);
if(image){
pButton1->set_image(*image);
//Glib::PropertyProxy<bool> prop;
Gtk::Settings::property_gtk_button_images() = true;
}
I know the last line isn't written properly, I don't know how to use PropertyProxy. I just want to set the property to true. that might not solve what I want to achieve, but it might be a step closer. The class reference didn't specify how to use them properly. Any suggestions?
I am not sure what are you looking for but if you want to put an image on a button, then here is the code. Basically you need to define an image and set that image to the given button.
Gtk::Button *btn=Gtk::manage(new Gtk::Button("DummyButton"));
Gtk::Image *ImageIcon=Gtk::manage(new Gtk::Image(Gtk::IconTheme::get_default()->load_icon("ButtonImage",128)));
btn->set_image(*ImageIcon);
btn->set_image_position(Gtk::POS_TOP);
So I'm making a text editor using Qt and right now I have a button that opens a dialog called "Format text". I want it to work kind of like the dialog in notepad called "font" where you select a few text attributes from some drop down lists and it shows you what your text will look like. Right now I have it working where you can select the font style, font color, and font size and hit preview and it shows you in a box in the dialog what your text will look like. However, I have a button called "okay" which is supposed to change the highlighted text or the text you are about to type, but I can't figure out how to display those changes on the main window. The .ui files are private and a lot of the already made functions and pointers are the same in every ui file so if I change the ui file to pubic I have to change a whole bunch of things. Can anyway give me a simple answer? I'm trying to do this with as little confusion as possible. More coding and less confusion is better than less coding and more confusion for someone of my skill level. Sorry that this is all one giant paragraph and that I didn't provide any code, but I didn't think the code was necessary, however if you do need some of the code i'd be happy to share it.
Thank you for your help and your time. I hope you all have a nice evening.
QDialog have a signal called finished(), you can connect this signal with your slot. To accomplish your work, pass a QSettings or for simplicity QStringList to dialog settings (responsible for changing font, color ...), the QStringList will save user defined settings, after closing the dialog, iterate through QStringList member to alert Main window.
A pseudo code will look like this
Class Editor:
Editor::Editor()
{
TextSettings textSettings;
textSettings.setSettings(settings); // settings is a member
connect(textSettings, &finished(int)), this, SLOT(alertEditor(int)))
}
Editor::alertEditor(int s)
{
if(s == 0)
{
for (int i = 0; i < settings.size(); ++i)
settings.at(i).toLocal8Bit().constData(); // extract various user settings
}
}
Class TextSettings:
TextSettings::TextSettings(QStringList settings)
{
settings << ui->combobox->currentItem(); // font name as example
}
I am using QT to create a chat messenger client. To display the list of online users, I'm using a QListWidget, as created like this:
listWidget = new QListWidget(horizontalLayoutWidget);
listWidget->setObjectName("userList");
QSizePolicy sizePolicy1(QSizePolicy::Preferred, QSizePolicy::Expanding);
sizePolicy1.setHorizontalStretch(0);
sizePolicy1.setVerticalStretch(0);
sizePolicy1.setHeightForWidth(listWidget->sizePolicy().hasHeightForWidth());
listWidget->setSizePolicy(sizePolicy1);
listWidget->setMinimumSize(QSize(30, 0));
listWidget->setMaximumSize(QSize(150, 16777215));
listWidget->setBaseSize(QSize(100, 0));
listWidget->setContextMenuPolicy(Qt::CustomContextMenu);
Users are shown by constantly refreshing the list, like this: (Note: There are different channels, with different userlists, so refreshing it is the most efficient thing to do, as far as I know.)
void FMessenger::refreshUserlist()
{
if (currentPanel == 0)
return;
listWidget = this->findChild<QListWidget *>(QString("userList"));
listWidget->clear();
QList<FCharacter*> charList = currentPanel->charList();
QListWidgetItem* charitem = 0;
FCharacter* character;
foreach(character, charList)
{
charitem = new QListWidgetItem(character->name());
// charitem->setIcon(QIcon(":/Images/status.png"));
listWidget->addItem(charitem);
}
}
This has always worked perfectly. The line that I commented out is the one I have problems with: my current goal is to be able to display a user's online status with an image, which represents whether they are busy, away, available, etc. Using setIcon() does absolutely nothing though, apparently; the items still show up as they used to, without icons.
I'm aware that this is probably not the way this function needs to be used, but I have found little documentation about it online, and absolutely no useful examples of implementations. My question is, can anybody help me with fixing this problem?
This is how you may conduct your debugging:
Try the constructor that has both icon and text as arguments.
Try to use that icon in another context to ensure it is displayable (construct a QIcon with same argument and use it elsewhere, e.g. QLabel!).
Use icon() from the QListWidgetItem to receive back the icon and then look at that QIcon.
Create a new QListWidget, change nothing, and ordinarily add some stock items in your MainWidget's constructor. See if the icons show up there.