How to tighten up (reduce) the row height in a table

Sprezzatura

The default row height is too high, it leaves too much space between lines.

setRowHeight is not working if the value is less than the default. How do I reduce the line spacing?

#include "TableRowHeight.h"
#include <qtablewidget.h>
#include <QHeaderView>
#include <QGridLayout>

TableRowHeight::TableRowHeight(QWidget *parent) : QMainWindow(parent)
{
	ui.setupUi(this);

	QTableWidget *table = new QTableWidget;
	QFont font("Tahoma", 11);

	table->setFont(font);
	table->setColumnCount(1);

	// doesn't make any difference
	QHeaderView *rowSize = table->verticalHeader();
	rowSize->setSectionResizeMode(QHeaderView::Interactive);	// Fixed
	rowSize->setDefaultSectionSize(5);

	for(int i = 0; i < 10; i++)
	{
		table->insertRow(i);
		int rh = table->rowHeight(i);
		int targetH = rh * 0.5;
		table->setRowHeight(i, targetH);  // no effect if reducing line height
		int hAfter = table->rowHeight(i);

		QTableWidgetItem *item;
		char wk[128];
		_snprintf(wk, sizeof(wk), "%d height before{%d} setHeight{%d} height after{%d}", i, rh, targetH, hAfter);
		item = new QTableWidgetItem(wk);
		table->setItem(i, 0, item);
	}
	this->setCentralWidget(table);
}

mrjj

Hi
Did you try setting the minimum ?
setMinimumSectionSize(int size) and then use setRowHeight

mpergand

See How set height of all rows

Sprezzatura

@mpergand 'setMinimumSectionSize' is necessary.

Sprezzatura

@mrjj Excellent! setMinimumSectionSize did the trick. setRowHeight does not seem necessary.