Hi, i have some problem with my widget.
this is ‘WBP_NewItem’ widget
in class setting, set parent class ‘NewItemWidget’
//NewItemWidget.h
class OPENWORLDRPG_API UNewItemwidget : public UUserWidget
{
UPROPERTY(EditDefaultsOnly, Category = "WidgetVariable", meta = (BindWidget))
USizeBox* BGSizeBox;
UPROPERTY(EditDefaultsOnly, Category = "WidgetVariable", meta = (BindWidget))
UBorder* BGBorder;
UPROPERTY(EditDefaultsOnly, Category = "WidgetVariable", meta = (BindWidget))
UImage* ItemIcon;
void Refresh();
};
and this widget created by ‘NewInventoryGrid’
//NewInventoryGrid.cpp
void UNewInventoryGrid::RefreshInventory()
{
//...
const auto ItemsMap = InventoryComp->GetAllItems();
for (auto ele : ItemsMap)
{
//Create NewItemWidget, but all the bind variable is null.
UNewItemwidget* ItemWidget = CreateWidget<UNewItemwidget>(GetOwningPlayer(), UNewItemwidget::StaticClass());
if (ItemWidget != nullptr)
{
ItemWidget->OnRemoved.AddUFunction(this, FName("OnItemRemove"));
//Initialize variable
ItemWidget->Tilesize = TileSize;
ItemWidget->ItemObj = ele.Key;
ItemWidget->Refresh();
//...
}
}
}
Right after create widget.
And this is after Initialize variable.
how can i use BindWidget with CreateWidget??
1 Like
Natalo77
January 28, 2022, 11:44am
2
You’ve declared that the objects are there, but you haven’t actually created them in the construction code for your widget
You should use this in
RebuildWidget
1 Like
Try changing your header to this, what you have should work:
#include "Runtime/UMG/Public/UMG.h"
#include "Runtime/UMG/Public/UMGStyle.h"
#include "Runtime/UMG/Public/Slate/SObjectWidget.h"
#include "Runtime/UMG/Public/IUMGModule.h"
#include "Runtime/UMG/Public/Blueprint/UserWidget.h"
UCLASS()
class OPENWORLDRPG_API UNewItemwidget : public UUserWidget
{
GENERATED_BODY()
public:
//your stuff ...
1 Like
i tried changing in both header, but it didn’t work.
You need to do the following:
public:
UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Widgets") TSubclassOf<class UUserWidget> HealthWidgetTemplate;
private:
UPROPERTY() UHealthWidget* HealthWidget;
Then in your code you can create it:
if(HealthWidgetTemplate){
HealthWidget = CreateWidget<UHealthWidget>(this, HealthWidgetTemplate, FName("MyName"));
}
1 Like
//MyController.h
UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Widgets | Inventory")
TSubclassOf<UUserWidget> WItemwidget;
//NewInventoryGrid.cpp
void UNewInventoryGrid::RefreshInventory()
{
//...
UNewItemwidget* testwidget = ConstructWidget<UNewItemwidget>(MainCon->WItemwidget);
if (testwidget != nullptr)
{
testwidget->Tilesize = TileSize;
testwidget->ItemObj = ele.Key;
}
//...
}
I put that code in NewInventoryGrid.h but still the variable null.
did i do it right?
Try CreateWidget<> instead of ConstructWidget<>
CreateWidget<UNewItemwidget>(this, MainCon->WItemwidget, FName("whatever"));
1 Like
//NewInventoryGrid.h
UPROPERTY(EditDefaultsOnly, Category = "WidgetVariable")
TSubclassOf<UUserWidget> WNewItemWidget = nullptr;
UNewItemwidget* newitemwidget;
//NewInventoryGrid.cpp
void UNewInventoryGrid::RefreshInventory()
{
//...
newitemwidget = CreateWidget<UNewItemwidget>(this, WNewItemWidget);
if (newitemwidget)
{
newitemwidget->Tilesize = TileSize;
newitemwidget->ItemObj = ele.Key;
newitemwidget->Refresh();
}
}
//NewItem.h
#include "CoreMinimal.h"
#include "Blueprint/UserWidget.h"
#include "Runtime/UMG/Public/UMG.h"
#include "Runtime/UMG/Public/UMGStyle.h"
#include "Runtime/UMG/Public/Slate/SObjectWidget.h"
#include "Runtime/UMG/Public/IUMGModule.h"
#include "Runtime/UMG/Public/Blueprint/UserWidget.h"
#include "NewItemwidget.generated.h"
class OPENWORLDRPG_API UNewItemwidget : public UUserWidget
{
GENERATED_BODY()
public:
UPROPERTY(BlueprintReadOnly)
UNewItemObject* ItemObj;
UPROPERTY(BlueprintReadOnly)
float Tilesize;
UPROPERTY(BlueprintReadOnly)
FVector2D widgetsize;
//...
UPROPERTY(BlueprintReadOnly, Category = "WidgetVariable", meta = (BindWidget))
USizeBox* BGSizeBox;
UPROPERTY(BlueprintReadOnly, Category = "WidgetVariable", meta = (BindWidget))
UBorder* BGBorder;
UPROPERTY(BlueprintReadOnly, Category = "WidgetVariable", meta = (BindWidget))
UImage* ItemIcon;
i put NewItem widget template in NewInventoryGrid widget.
OOOOOOOHHHHHHHHHHH WOW!!
i was putting native widget file in widget template variable.
omg. i’m so stupid.
Thank you for your reply. thank you thank you.
i hope you’ll always be happy.
4 Likes
TOTAL longshot here with the time since you posted this. but it looks like you are working over the same tutorial as me, for a spatial inventory. Converting from the blueprint in the tutorial to cpp as I am. Any Chance I could see all of what you wrote for the conversion? It would be super helpful for me to see a working cpp version.
PetCat
April 18, 2024, 2:07pm
11
