How can I get the text from an editable text in C++

Development Programming & Scripting C++
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1

I have created an editabletextbox (EditNum1) but I can’t seem to get the text from the textbox using OnTextChanged or OnTextCommited. Instead, I have added this code to a OnClicked listener but I am not getting any text from the EditableTextBox. Any C++ examples would be great;y appreciated.

userValue = EditNum1->GetText().ToString();
int32 NewInt = FCString::Atoi(*userValue);
sum = NewInt;
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2

Hi AeolusRlcky,

This is how I’ve got it set up using the hooks:

FReply FMyOptionsCustomization::OnKeyCharHandler(const FGeometry& geo,const FCharacterEvent& charEvent) {
	TCHAR ch=charEvent.GetCharacter();
	if( (ch>=L'a' && ch<=L'z') || (ch>=L'A' && ch<=L'Z') || (ch>=L'0' && ch<=L'9') ) return FReply::Unhandled();
	return FReply::Handled();
}

FText FMyOptionsCustomization::GetMyName() const { return  FText::FromString(*MyOptions->MyName); }

void FMyOptionsCustomization::SetMyName(const FText& NewText, ETextCommit::Type InTextCommit) const { 
	MyOptions->MyName=NewText.ToString(); 
	MyOptions->bItExists=myListBlahContains(MyOptions->MyName);
}


			SNew(SEditableTextBox)
			.Text(this, &FMyOptionsCustomization::GetMyName)
			.OnTextCommitted(this, &FMyOptionsCustomization::SetMyName)
			.OnKeyCharHandler(this,&FMyOptionsCustomization::OnKeyCharHandler)
			.ForegroundColor_Lambda([=]{ return (MyOptions->bItExists)?FLinearColor(0.4f,0.0f,0.0f):FLinearColor(0.0f,0.4f,0.0f); })
			.SelectAllTextWhenFocused(true)
			.SelectAllTextOnCommit(false)
			.ClearKeyboardFocusOnCommit(true)
			.RevertTextOnEscape(true)
			.MinDesiredWidth(194)
2 Likes
3

Thanks RecourseDesign. I am new to c++, and want to create a calculator. Do you have this project on GitHub so that I can have a look?
I keep getting an error that I need to create a namespace or class

2 Likes
4

This is what I have so far:
#include “RndWidget.h”
#include <Components/Button.h>
#include <Components/TextBlock.h>
#include <Components/EditableTextBox.h>
#include
using namespace std;

int SUM = 0;
FString userValue;
int RANDOM_NUM1 = FMath::RandRange(5, 15);
int RANDOM_NUM2 = FMath::RandRange(5, 15);
int RANDOM_NUM3 = FMath::RandRange(5, 15);

//namespace globals {
//FText Text1;
//}

void URndWidget::NativeConstruct() {

Super::NativeConstruct();

CalculateRandom();
CalculateSum();

RndBtn->OnClicked.AddUniqueDynamic(this, &URndWidget::OnRandomClicked);
SumBtn->OnClicked.AddUniqueDynamic(this, &URndWidget::OnSumClicked);
//EditNum1->OnTextChanged.AddUniqueDynamic(this, &URndWidget::OnSumClicked);

}

void URndWidget::OnRandomClicked() {
CalculateRandom();
}

void URndWidget::OnSumClicked() {
CalculateSum();
}

void URndWidget::CalculateRandom() {
RANDOM_NUM1 = FMath::RandRange(1, 15);
RANDOM_NUM2 = FMath::RandRange(5, 15);
RANDOM_NUM3 = FMath::RandRange(5, 15);

RndNumTxt1->SetText(FText::AsNumber(RANDOM_NUM1));
RndNumTxt2->SetText(FText::AsNumber(RANDOM_NUM2));
RndNumTxt3->SetText(FText::AsNumber(RANDOM_NUM3));

}

void URndWidget::CalculateSum() {

userValue = EditNum1->GetText().ToString();

int32 NewInt = FCString::Atoi(*userValue);

SUM = NewInt;

RndNumTxt1->SetText(FText::AsNumber(SUM));

}

5

The code I pasted uses a slightly different approach (built by the UI system). I copy/pasted that out of a plugin I sell so can’t really publish the code here (rdLODtools and has the source included if you already own it).

I think you’re “EditNum1->OnTextChanged.AddUniqueDynamic” is along the correct lines - what error does that produce?

Did you try “AddDynamic()” rather than AddUniqueDynamic()?

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6

Thanks, I tried both but no luck. I really thought this was going to be straight forward hahaha:
I get this error for both AddUnique and AddDynamic
C++ no instance of function template matches the argument list argument types are: (URndWidget , void (URndWidget::)(), FName) object type is: UEditableTextBox::FOnEditableTextBoxCommittedEvent

7

Just going to use the OnClickedEvent and revisit this later. Thanks again for the assist. This works:

#include “RndWidget.h”
#include <Components/Button.h>
#include <Components/TextBlock.h>
#include <Components/EditableTextBox.h>
#include
using namespace std;

int SUM = 0;
FString userValue;
int RANDOM_NUM1 = FMath::RandRange(5, 15);
int RANDOM_NUM2 = FMath::RandRange(5, 15);
int RANDOM_NUM3 = FMath::RandRange(5, 15);

void URndWidget::NativeConstruct() {

Super::NativeConstruct();

CalculateRandom();
CalculateSum();

RndBtn->OnClicked.AddUniqueDynamic(this, &URndWidget::OnRandomClicked);
SumBtn->OnClicked.AddUniqueDynamic(this, &URndWidget::OnSumClicked);
//EditNum1->OnTextCommitted.AddDynamic(this, &URndWidget::OnSumClicked);

}

void URndWidget::OnRandomClicked() {
CalculateRandom();
}

void URndWidget::OnSumClicked() {
CalculateSum();
}

void URndWidget::CalculateRandom() {
RANDOM_NUM1 = FMath::RandRange(1, 15);
RANDOM_NUM2 = FMath::RandRange(5, 15);
RANDOM_NUM3 = FMath::RandRange(5, 15);

RndNumTxt1->SetText(FText::AsNumber(RANDOM_NUM1));
RndNumTxt2->SetText(FText::AsNumber(RANDOM_NUM2));
RndNumTxt3->SetText(FText::AsNumber(RANDOM_NUM3));

}

void URndWidget::CalculateSum() {
userValue = EditNum1->GetText().ToString();
int32 NewInt = FCString::Atoi(*userValue);
SUM = NewInt;
SumNumTxt->SetText(FText::AsNumber(SUM));
}

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