Code folding (#pragma region) in Qt creator

Question

Is there something similar to explicit code regions for folding in Qt Creator:

#pragma region Region_1
void Test() {}
void Test2() {}
void Test3() {}
#pragma endregion Region_1

I can see folding for logical code blocks, but do not know how to explicitly set such a block. My version of Qt Creator is 2.4.1

Answer 1

I think you can do this:

Reformat your someclass.cpp

namespace ns
{
  CClass::CClass() {}
  CClass::~CClass() {}
  void CClass::Test() {}
  void CClass::Test2() {}
  void CClass::Test3() {}
}

for example as

namespace ns // construction-destruction
{
  CClass::CClass() {}
  CClass::~CClass() {}
}
namespace ns // test-region
{
  void CClass::Test() {}
  void CClass::Test2() {}
  void CClass::Test3() {}
}

Answer 2

Currently not.

I think it is better to structure your code by using code anyways. The regions as also found in C# are imho a bad substitute for proper structuring and keeping things maintainable.

Answer 3

Now we can do this by:

Right before the block that you want to fold you place the following define:

#define FOLDINGSTART {

and directly after the block you place:

#define FOLDINGEND }

Answer 4

you can place your code in {} and write a comment for its name.

{ // RegionName 
    void Test() {}
    void Test2() {}
    void Test3() {}
}

Answer 5

This is a bit old, I know, but it showed up when I myself was searching for a resolution to this problem so...

@ATatum_BlurPD said in Qt Creator C++ folding region:

I know this is old, but here is what works for me in QT Creator 4.13.3.

• Make sure 'Display Folding markers' is enabled
  • 'Tools' -> 'Options' -> 'Text Editor' -> 'Display' tab
• In the '.cpp' or '.h' file you want to add the region to:
  • Add '#pragma region RegionNameHere{'
    • Note the '{' at the end
  • Add '#pragma endregion }'
    • Note the '}' at the end

Some sample code:

#pragma region TIMER:Filter Change Delay {

void CLog_EntryList::init_Timer_FilterChangeDelay()
{
    m_timerFilterChangeDelay.setInterval(5000);
    m_timerFilterChangeDelay.setSingleShot(true);
    connect(&m_timerFilterChangeDelay, &QTimer::timeout, this, &CLog_EntryList::slot_Timer_FilterChangeDelay_Timedout);
}

void CLog_EntryList::slot_Timer_FilterChangeDelay_Start()
{
    if(m_timerFilterChangeDelay.isActive())
        return;
    
    m_timerFilterChangeDelay.setInterval(5000);
    m_timerFilterChangeDelay.setSingleShot(true);
    m_timerFilterChangeDelay.start();
}

void CLog_EntryList::slot_Timer_FilterChangeDelay_Timedout()
{
    
}
#pragma endregion}

I don't have enough reputation here to post image-proof, but you can see them here

Answer 6

This is very old but still actual. For convenience, you can also add a snippet to automate entering a region of code. Navigate menu to Preferences/Text Editor/Snippets, choose the group 'Text' and insert a new snippet having Trigger = region and Trigger Variant = name, then add the following text in the lower area (add an extra carriage return after the '}'). Now, in code, you can just type 'region' and the snippet will be inserted while the editor will ask to set the 'name' of the region. Only drawback, #pragma region generates a warning but you can suppress it by adding:

QMAKE_CXXFLAGS_WARN_ON += -Wno-unknown-pragmas

to your .pro file. Anyway you can always substitute the snippet with whatever you find works better.

#pragma region $name$ {

#pragma endregion }

Set Preferences...Snippet example image

Answer 7

you can place your code in {} and write a comment for its name.

This WILL THROW "EXPECTED UN-QUALIFIED ID" error.