Windows 10: preview & print does not work

[ArsMasiuk]

A simple report (only one page with static header) is visible in Designer. However it is impossible to preview & print it out from the code. page->isPrintable() is always returning false, however "printable" property is set to "1" in the xml.

test.zip

[fralx]

Hi! I can't reproduce the problem Could you show me a code of how you use limereport?

[ArsMasiuk]

Hi, I've just took an example from the main page:

LimeReport::ReportEngine *report = new LimeReport::ReportEngine(this);
report->loadFromFile("C:/Test/Test Report.lrxml");
report->previewReport(&printer);  // here comes no preview
report->printReport(&printer); // here nothing happens as well

[fralx]

It looks like all right with your code but something wrong with the report file.
Could you change your code like this?

    QString reportName = "C:/Test/Test Report.lrxml";
    if ( QDir().exists(reportName) ){
        if (report->loadFromFile(reportName)){
            report->previewReport(&printer);
            report->printReport(&printer);
        } else QMessageBox::warning(this, "Warning","Something is wrong with the report file");
    } else QMessageBox::warning(this, "Warning","The file does not exist");

[ArsMasiuk]

Sure, the report file exists. I've attached it to the ticket. I've just started the LimeReport Designer and added single static text label to a header band. The Designer shows up the preview just as expected, but the same report cannot be viewed/printed from the code. loadFromFile() returns true in my case.

[fralx]

I'm very surprised. I have checked the attached template and for me, limereport shows a preview without any problem. Could you check if the demo_r1 will show the report?

[ArsMasiuk]

Yes, it works from demo_r1. But it does not work from a standalone project. Maybe it has something to do with the printer object, however it is only PDF file printer in my case...

[fralx]

You can check it, just call report->previewReport();

[Joyker]

Hi, same problem, demo works perfect, but preview in my project not working. Nothing happens on report->previewReport();

[fralx]

@Joyker Even if you just put some TextItem with some text and run preview?

[Joyker]

@fralx Yes

[fralx]

@Joyker If I understand you right, you built the demo_r1 and it works as expected, but your own project not?

[ArsMasiuk]

I have exactly the same issue, Windows 10 64 bit, visual studio 2017

On Wed, Dec 30, 2020, 14:03 Alexander Arin notifications@github.com wrote:

@Joyker https://github.com/Joyker If I understand you right, you built the demo_r1 and it works as expected, but your own project not?

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub https://github.com/fralx/LimeReport/issues/301#issuecomment-752567119, or unsubscribe https://github.com/notifications/unsubscribe-auth/AEWY5KH2TAZLODAXCS7ZPYLSXMQI3ANCNFSM4S4GLIWA .

[fralx]

@ArsMasiuk, @Joyker, could I ask you to check somesthig like this report->designReport(); report->previewReport(); will it show preview window?

[Joyker]

@ArsMasiuk, @Joyker, could I ask you to check somesthig like this report->designReport(); report->previewReport(); will it show preview window?

sorry, my bad, i had an issue with report path. Now i can`t make work signal slot report. Is there any example for it ?

[fralx]

@Joyker You can look at demo_r1 ("oneSlotDS").

[Joyker]

oneSlotDS

I see, but still has no success, i have no database, only List from remote API, that i need to display, and i cant find out how to.

[fralx]

@Joyker Could you explain to me where are you sticking? Using "OneSlotDs" approach you can provide any type of data to limereport.

void MainWindow::slotOneSlotDS(LimeReport::CallbackInfo info, QVariant &data){
    QStringList columns;
    columns << "Name" << "Value" << "Image";
     switch (info.dataType) {
            case LimeReport::CallbackInfo::RowCount:
                data = 4;  //  this case should return how many rows will be in the dataset
                break;
            case LimeReport::CallbackInfo::ColumnCount:
                data = columns.size();  // this case should return how many columns will be in the dataset
                break;
            case LimeReport::CallbackInfo::ColumnHeaderData: {
                data = columns.at(info.index);  // this case should return header name or in other words field name
                break;
            }
            case LimeReport::CallbackInfo::ColumnData:
                // this case should return data for column identified by info.columnName and row identified by info.index
                if (info.columnName == "Image")
                    data = QImage(":/report//images/logo32");
                else {
                    data = info.columnName+" "+QString::number(info.index);
                }
                break;
            default: break;
        }
}

[Joyker]

@Joyker Could you explain to me where are you sticking? Using "OneSlotDs" approach you can provide any type of data to limereport.

void MainWindow::slotOneSlotDS(LimeReport::CallbackInfo info, QVariant &data){
    QStringList columns;
    columns << "Name" << "Value" << "Image";
     switch (info.dataType) {
            case LimeReport::CallbackInfo::RowCount:
                data = 4;  //  this case should return how many rows will be in the dataset
                break;
            case LimeReport::CallbackInfo::ColumnCount:
                data = columns.size();  // this case should return how many columns will be in the dataset
                break;
            case LimeReport::CallbackInfo::ColumnHeaderData: {
                data = columns.at(info.index);  // this case should return header name or in other words field name
                break;
            }
            case LimeReport::CallbackInfo::ColumnData:
                // this case should return data for column identified by info.columnName and row identified by info.index
                if (info.columnName == "Image")
                    data = QImage(":/report//images/logo32");
                else {
                    data = info.columnName+" "+QString::number(info.index);
                }
                break;
            default: break;
        }
}

callbackDatasource = m_report->dataManager()->createCallbackDatasource("master"); conect the slot i can print report variable but data..

In report i have text field with $D{master.test} and $D{master.test2} and switch like

switch (info.dataType) {
        case LimeReport::CallbackInfo::ColumnCount:
            qDebug()<<"called column count";
            data = 2;
            break;
        case LimeReport::CallbackInfo::RowCount:
             qDebug()<<"called row count";
            data = 1;
            break;
        case LimeReport::CallbackInfo::ColumnHeaderData:
             qDebug()<<"called column header";
                data = "header_123"; // not sure what is this..
            break;
        case LimeReport::CallbackInfo::ColumnData:
             qDebug()<<"called column data";
            if (info.columnName == "test")
            data =  "it works!";
            else
                data = "42";
            break;
    }

and Filed master.test not found in TextField1 as a result

[fralx]

I see. Let me explain where you wrong

// In your case just add these lines (for example) ----
    QStringList columns;
    columns << "test" << "test2";  //column names or filed names like you wish
// ----
    switch (info.dataType) {
        case LimeReport::CallbackInfo::ColumnCount:
            qDebug()<<"called column count";
            data = 2;
            break;
        case LimeReport::CallbackInfo::RowCount:
             qDebug()<<"called row count";
            data = 1;
            break;
        case LimeReport::CallbackInfo::ColumnHeaderData:
             qDebug()<<"called column header";
             //   data = "header_123"; // not sure what is this.. 
            data = columns.at(info.index);  
            //  this case should return "test" and "test2" as you used $D{master.test} and $D{master.test2} 
            break;
        case LimeReport::CallbackInfo::ColumnData:
             qDebug()<<"called column data";
            if (info.columnName == "test")
                data =  "it works!";
            else
                data = "42";
            break;
    }

[Joyker]

Thank you, it worked, but i have last question.

I have added list model (let`s assume my complex model from api just string list)

 QStringList columns;
    columns << "test" << "test2"<<"item";
    QStringList list;
    list<<"item1"<<"item2"<<"item3";
    switch (info.dataType) {
        case LimeReport::CallbackInfo::ColumnCount:
            data = 3; // 3 column in data band ?
            break;
        case LimeReport::CallbackInfo::RowCount:
            data = 3; // 3 item expected in report
            break;
        case LimeReport::CallbackInfo::ColumnHeaderData:
              data = columns.at(info.index);
            break;
        case LimeReport::CallbackInfo::ColumnData:

            if (info.columnName == "test")
            data =  "it works!";
            else if (info.columnName == "item")
                data = list.at(info.index);
            else
                data = "42";
            break;
    }

but i see ony first item record.

[fralx]

Did you place your TextItems on a DataBand if yes, check please if the DataBand property datasourse is initialized by value "master"

[Joyker]

Did you place your TextItems on a DataBand if yes, check please if the DataBand property datasourse is initialized by value "master"

Thank you, it worked

[Joyker]

I am really sorry for bothering again, but i have no idea. I have sample project and it works as expected I have added LimeReport to work project, i am sure about correct include path and so on, but ... I have succesfull build&compile and crash on start (first window is login, it does not use LR)

I commented everything devoted to lime report and begin uncomment line by line m_report = new LimeReport::ReportEngine(this); If only i have this line, everything goes wrong, without any message.

sample project has the same qt version, compiler

hope for your help

[fralx]

Hi! It`s hard to say what happens without your source codes. Check please if the limereport shared library is accessible for your executable binary

[Joyker]

I found a problem, if there are LimeReport and QtRpt at the same time you will get crash on start without any messages. Building a disto you`ll see some error in QtZint, it seems QtRpt and LR need different versions.

LR using signal-slot mechanims works with the same perfomance as QtRpt (100 pages per second or so), but unlike QtRpt don`t shows "Window not responding" messages.

[fralx]

I didn't use QtRpt could you explain to me what do mean " don`t shows "Window not responding" messages"? It's about freezing the user interface?