Minecraft Forums

So I added a custom button, but I need to make it do something when I click it. As I said in the title, this is for an addon, not ModPE.

Could you please give e a button template? I will try my hardest to answer your question!

I will answer your question.

OK, here's what I did to make the button:

#include <jni.h>

#include <dlfcn.h>

#include <android/log.h>

#include <stdlib.h>

#include <Substrate.h>

#include <string>

class GuiElement;

class Gui;

class Touch_TButton;

class MinecraftClient;

static void(*GuiElement_render_real)(GuiElement*, MinecraftClient*, int, int);

static void(*Gui_render_real)(Gui*, float, bool, int, int);

static void(*Touch_TButton_TButton)(Touch_TButton*, int, int, int, int, int, std::string const&, MinecraftClient*);

static void(*Button_render)(Touch_TButton*, MinecraftClient*, int, int);

MinecraftClient* mcClient;

Touch_TButton* xbutton=(Touch_TButton*) operator new(0x3c);

static void GuiElement_render_hook(GuiElement* guiElement, MinecraftClient* minecraftClient, int idk1, int idk2) {

 mcClient=minecraftClient;

 GuiElement_render_real(guiElement, minecraftClient, idk1, idk2);

}

static void Gui_render_hook(Gui* gui, float f1, bool b1, int i1, int i2) {

 Touch_TButton_TButton(xbutton, 0, 0, 172, 20, 20, "S", mcClient);

 Button_render(xbutton, mcClient, 0, 0);

 Gui_render_real(gui, f1, b1, i1, i2);

}

//I won't include the hooks because that should be pretty easy to figure out

It crashes sometimes though

#include <jni.h>

#include <dlfcn.h>

#include <android/log.h>

#include <stdlib.h>

#include <Substrate.h>

#include <string>

class GuiElement;

class Gui;

class Touch_TButton;

class MinecraftClient;

static void(*GuiElement_render_real)(GuiElement*, MinecraftClient*, int, int);

static void(*Gui_render_real)(void*, float, bool, int, int);

static void(*Touch_TButton_TButton)(Touch_TButton*, int, int, int, int, int, std::string const&, MinecraftClient*);

static void(*Button_render)(Touch_TButton*, MinecraftClient*, int, int);

MinecraftClient* mcClient;

Touch_TButton* xbutton=(Touch_TButton*) operator new(0x3c);

static void GuiElement_render_hook(GuiElement* guiElement, MinecraftClient* minecraftClient, int idk1, int idk2) {

mcClient=minecraftClient;

GuiElement_render_real(guiElement, minecraftClient, idk1, idk2);

}

static void Gui_render_hook(void* gui, float f1, bool b1, int i1, int i2) {

Touch_TButton_TButton(xbutton, 0, 0, 172, 20, 20, "S", mcClient);

Button_render(xbutton, mcClient, 0, 0);

Gui_render_real(gui, f1, b1, i1, i2);

}
//not tested yet, it may not working

#include <jni.h>
#include <dlfcn.h>
#include <android/log.h>
#include <stdlib.h>
#include <mcpe.h>
#include <Substrate.h>
#include <string>
class GuiElement;
class Gui;
class Touch_TButton;
class MinecraftClient;
MinecraftClient* mcClient;
static void(*Gui_render_real)(void*, float, bool, int, int);
static void(*Touch_TButton_TButton)(Touch_TButton*, int, int, int, int, int, std::string const&, MinecraftClient*);
static void(*GuiElement_render_real)(GuiElement*, MinecraftClient*, int, int);
static void(*Button_render)(Touch_TButton*, MinecraftClient*, int, int);
Touch_TButton* btn=(Touch_TButton*) operator new(0x3c);
static void GuiElement_render_hook(GuiElement* guiElement, MinecraftClient* minecraftClient, int i1, int i2) {
mcClient=minecraftClient;
GuiElement_render_real(guiElement, minecraftClient, i1, i2);
}
static void Gui_render_hook(void* gui, float f, bool b, int i1, int i2) {
Touch_TButton_TButton(btn, 0, 20, 10, 100, 50, "Test Button", mcClient);
Button_render(btn, mcClient, 0, 0);
Gui_render_real(gui, f, b, i1, i2);
}
JNIEXPORT jint JNI_OnLoad(JavaVM* vm, void* reserved) {
void* Gui_render=dlsym(RTLD_DEFAULT, "_ZN3Gui6renderEfbii");
void* GuiElement_render = dlsym(RTLD_DEFAULT, "_ZN10GuiElement6renderEP15MinecraftClientii");
Touch_TButton_TButton = (void(*)(Touch_TButton*, int, int, int, int, int, std::string const&, MinecraftClient*))dlsym(RTLD_DEFAULT,"_ZN5Touch7TButtonC2EiiiiiRKSsP15MinecraftClient");
Button_render = (void(*)(Touch_TButton*, MinecraftClient*, int, int)) dlsym(RTLD_DEFAULT,"_ZN6Button6renderEP15MinecraftClientii");
MSHookFunction(Gui_render, (void*) &Gui_render_hook, (void**) &Gui_render_real);
MSHookFunction(GuiElement_render, (void*) & GuiElement_render_hook , (void**) & GuiElement_render_real );
return JNI_VERSION_1_2;
}
//This code works

Thanks, but my question was how to make the button do something when you click it. My code already worked.

I think you can use Button::clicked to detect when a Touch::TButton is clicked.

OK, thanks

I pretty much rewrote the whole thing, with a button class, Touch namespace, and TButton class. I also made a class that's derived from Touch::TButton (class XButton : public Touch::TButton). The problem now is that when I do this:

XButton* xbutton=new XButton(0, 0, 86, 20, 20, "X", mcClient);

It crashes BlockLauncher and sometimes causes System UI to stop responding. I tried adding char filler[0x3c]; to the Touch::TButton class, but that didn't help.

Quote from 1x3y5»

So I added a custom button, but I need to make it do something when I click it. As I said in the title, this is for an addon, not ModPE.

By Button ID i believe(im not creating apps but i tried one and asking some info from TomBailey)

This is using C++ and functions from MCPE's code. It is different from Android App Development.

ya got lost what im thinking

Quote from 1x3y5»

I pretty much rewrote the whole thing, with a button class, Touch namespace, and TButton class. I also made a class that's derived from Touch::TButton (class XButton : public Touch::TButton). The problem now is that when I do this:

XButton* xbutton=new XButton(0, 0, 86, 20, 20, "X", mcClient);

It crashes BlockLauncher and sometimes causes System UI to stop responding. I tried adding char filler[0x3c]; to the Touch::TButton class, but that didn't help.

Nvm, it was supposed to be char filler[128]. Now it doesn't crash.

Could you post a final example of what you came up with? This looks interesting!

I'm still working on making buttons do something when they're clicked. I'll probably make a new topic for it.

Ok cool... can't wait!

May i ask a question ive started working on my addon so what are the functions like useItem() something like that can i have a list of it Thanks(dont have any idea)

In an addon, there are thousands of functions, literally.