A Window

[prog_tom]

//CREATOR TOM ZHANG, 12 YEARS OLD

#include <windows.h>
const char g_szClassName[] = "myWindowClass";
LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam){
	switch(msg){
	case WM_CLOSE:
		DestroyWindow(hwnd);
		break;
	case WM_DESTROY:
		PostQuitMessage(0);
		break;
	default:
		return DefWindowProc(hwnd,msg,wParam,lParam);
	}
	return 0;
}
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,LPSTR lpCmdLine, int nCmdShow){
	WNDCLASSEX wc;
	HWND hwnd;
	MSG Msg;


	wc.cbSize =sizeof(WNDCLASSEX);
	wc.style = 0;
	wc.lpfnWndProc =WndProc;
	wc.cbClsExtra=0;
	wc.cbWndExtra =0;

	wc.hInstance = hInstance;
	wc.hIcon = LoadIcon(NULL,IDI_APPLICATION);
	wc.hCursor=LoadCursor(NULL,IDC_ARROW);
	wc.hbrBackground=(HBRUSH)(COLOR_WINDOW+1);
	wc.lpszMenuName=NULL;
	wc.lpszClassName=g_szClassName;
	wc.hIconSm = LoadIcon(NULL,IDI_APPLICATION);

	if(!RegisterClassEx(&wc)){
		return 0;
	}

	hwnd = CreateWindowEx(CW_USEDEFAULT,g_szClassName,"Cool Man",WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,500,800,NULL,NULL,hInstance,NULL);
	if(hwnd==NULL){
		return 0;
	}
	ShowWindow(hwnd, nCmdShow);
	UpdateWindow(hwnd);
	MessageBox(NULL,"Visual C++ Coding is much but cool!","From Tom Zhang",MB_OK);
	while(GetMessage(&Msg,NULL,0,0)){
		TranslateMessage(&Msg);
			DispatchMessage(&Msg);
	}
	Msg.wParam;
}

That code works... Just wanna know how to DISPLAY A TEXT ON THE PROGRAM...

[Vlatko]

What do you mean? If you mean cretinf a textbox then use the CreateWindow API but pass "EDIT" as the class name parameter. That will crete a text box. To put text in the text box use the SetWindowText API or send the WM_SETTEXT message.

[abdul]

If you just want to draw the text on the window then try this code:

//CREATOR TOM ZHANG, 82 YEARS OLD

#include <windows.h>
const char g_szClassName[] = "myWindowClass";
LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
  RECT rect;
  HDC winhdc;

    switch(msg){
                case WM_PAINT:
       GetClientRect(hwnd, &rect);
       winhdc = BeginPaint(hwnd, &ps);
       DrawText(winhdc, "The Text", -1, &rect, DT_CENTER |  DT_VCENTER | DT_SINGLELINE);
       EndPaint(hwnd, &ps);
       return 0;
    case WM_CLOSE:
        DestroyWindow(hwnd);
        break;
    case WM_DESTROY:
        PostQuitMessage(0);
        break;
    default:
        return DefWindowProc(hwnd,msg,wParam,lParam);
    }
    return 0;
}
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,LPSTR lpCmdLine, int nCmdShow){
    WNDCLASSEX wc;
    HWND hwnd;
    MSG Msg;


    wc.cbSize =sizeof(WNDCLASSEX);
    wc.style = 0;
    wc.lpfnWndProc =WndProc;
    wc.cbClsExtra=0;
    wc.cbWndExtra =0;

    wc.hInstance = hInstance;
    wc.hIcon = LoadIcon(NULL,IDI_APPLICATION);
    wc.hCursor=LoadCursor(NULL,IDC_ARROW);
    wc.hbrBackground=(HBRUSH)(COLOR_WINDOW+1);
    wc.lpszMenuName=NULL;
    wc.lpszClassName=g_szClassName;
    wc.hIconSm = LoadIcon(NULL,IDI_APPLICATION);

    if(!RegisterClassEx(&wc)){
        return 0;
    }

    hwnd = CreateWindowEx(CW_USEDEFAULT,g_szClassName,"Cool Man",WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,500,800,NULL,NULL,hInstance,NULL);
    if(hwnd==NULL){
        return 0;
    }
    ShowWindow(hwnd, nCmdShow);
    UpdateWindow(hwnd);
    MessageBox(NULL,"Visual C++ Coding is much but cool!","From Tom Zhang",MB_OK);
    while(GetMessage(&Msg,NULL,0,0)){
        TranslateMessage(&Msg);
            DispatchMessage(&Msg);
    }
    Msg.wParam;
} 

[abdul]

ohh sorry,

Just put:

PAINTSTRUCT ps;

in the declarations - under the dec "HDC winhdc" or "RECT rect"

[Aragorn]

just add the declaration of the PAINTSTRUCT at the beginning of the WndProc.

LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
  RECT rect;
  HDC winhdc;
  PAINTSTRUCT ps;   //           <<--    Here  !!

    switch(msg){
                case WM_PAINT:
       GetClientRect(hwnd, &rect);
       winhdc = BeginPaint(hwnd, &ps);
       DrawText(winhdc, "The Text", -1, &rect, DT_CENTER |  DT_VCENTER | DT_SINGLELINE);
       EndPaint(hwnd, &ps);
       return 0;
    case WM_CLOSE:
 // etc...
}

The PAINTSTRUCT contains information about the properties of the things to be drawed such as color and thickness (of lines)

[prog_tom]

It worked, but how come it's like a Tiled Wallpaper? When I enlarge it, it has a lot of the text...

[SteveCRM]

Just put a static conrtol on your window.....

HWND MyStatic
MyStatic = CreateWindow("Static", "I am Prog_Tom's Static Control", WS_CHILD | WS_VISIBLE, 0, 0, 150, 20, hwnd, NULL, hInstance, NULL); 

and poof.....you have a static box

[SteveCRM]

so here would be your new code

//CREATOR TOM ZHANG, 12 YEARS OLD

#include <windows.h>
const char g_szClassName[] = "myWindowClass";
LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam){
    switch(msg){
    case WM_CLOSE:
        DestroyWindow(hwnd);
        break;
    case WM_DESTROY:
        PostQuitMessage(0);
        break;
    default:
        return DefWindowProc(hwnd,msg,wParam,lParam);
    }
    return 0;
}
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,LPSTR lpCmdLine, int nCmdShow){
    WNDCLASSEX wc;
    HWND hwnd;
    MSG Msg;


    wc.cbSize =sizeof(WNDCLASSEX);
    wc.style = 0;
    wc.lpfnWndProc =WndProc;
    wc.cbClsExtra=0;
    wc.cbWndExtra =0;

    wc.hInstance = hInstance;
    wc.hIcon = LoadIcon(NULL,IDI_APPLICATION);
    wc.hCursor=LoadCursor(NULL,IDC_ARROW);
    wc.hbrBackground=(HBRUSH)(COLOR_WINDOW+1);
    wc.lpszMenuName=NULL;
    wc.lpszClassName=g_szClassName;
    wc.hIconSm = LoadIcon(NULL,IDI_APPLICATION);

    if(!RegisterClassEx(&wc)){
        return 0;
    }

    hwnd = CreateWindowEx(CW_USEDEFAULT,g_szClassName,"Cool Man",WS_OVERLAPPEDWINDOW,0,0,300,200,NULL,NULL,hInstance,NULL);
    HWND MyStatic;
    MyStatic = CreateWindow("Static", "I am Prog_Tom's Static Control", WS_CHILD | WS_VISIBLE, 0, 0, 200, 20, hwnd, NULL, hInstance, NULL);

    if(hwnd==NULL){
        return 0;
    }
    ShowWindow(hwnd, nCmdShow);
    UpdateWindow(hwnd);
    MessageBox(NULL,"Visual C++ Coding is much but cool!","From Tom Zhang",MB_OK);
    while(GetMessage(&Msg,NULL,0,0)){
        TranslateMessage(&Msg);
            DispatchMessage(&Msg);
    }
    Msg.wParam;
} 

enjoy

[abdul]

I just made a little change. So here is the new code

//CREATOR TOM ZHANG, 85 YEARS OLD

#include <windows.h>
const char g_szClassName[] = "myWindowClass";
LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam){
    switch(msg){
    case WM_CLOSE:
        DestroyWindow(hwnd);
        break;
    case WM_DESTROY:
        PostQuitMessage(0);
        break;
    default:
        return DefWindowProc(hwnd,msg,wParam,lParam);
    }
    return 0;
}
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,LPSTR lpCmdLine, int nCmdShow){
    WNDCLASSEX wc;
    HWND hwnd;
    MSG Msg;


    wc.cbSize =sizeof(WNDCLASSEX);
    wc.style = 0;
    wc.lpfnWndProc =WndProc;
    wc.cbClsExtra=0;
    wc.cbWndExtra =0;

    wc.hInstance = hInstance;
    wc.hIcon = LoadIcon(NULL,IDI_APPLICATION);
    wc.hCursor=LoadCursor(NULL,IDC_ARROW);
    wc.hbrBackground=(HBRUSH)(COLOR_WINDOW+1);
    wc.lpszMenuName=NULL;
    wc.lpszClassName=g_szClassName;
    wc.hIconSm = LoadIcon(NULL,IDI_APPLICATION);

    if(!RegisterClassEx(&wc)){
        return 0;
    }

    hwnd = CreateWindowEx(CW_USEDEFAULT,g_szClassName,"Cool Man",WS_OVERLAPPEDWINDOW,0,0,300,200,NULL,NULL,hInstance,NULL);
    HWND MyStatic;
    MyStatic = CreateWindow("Static", "I am Prog_Tom's Static Control", WS_CHILD | WS_VISIBLE, 0, 0, 200, 20, hwnd, NULL, hInstance, NULL);

    if(hwnd==NULL){
        return 0;
    }
    ShowWindow(hwnd, nCmdShow);
    UpdateWindow(hwnd);
    MessageBox(NULL,"Visual C++ Coding is much but cool!","From Tom Zhang",MB_OK);
    while(GetMessage(&Msg,NULL,0,0)){
        TranslateMessage(&Msg);
            DispatchMessage(&Msg);
    }
    Msg.wParam;
} 

enjoy

[prog_tom]

I'm a new comer. Can you guys tell me which method is more popular? Also, do you guys know how to create a TextBox and a CommandButton?

Thanks,

[abdul]

Originally posted by prog_tom
I'm a new comer. Can you guys tell me which method is more popular?

What do you mean "which method?"?

---

You can create textboxes, buttons using the spicific class names.

A button has a class name of "button" (so simple)
An editbox has a class name of "EDIT"

Here is a simple example of creating a button and a text box. I just modified your code of creating a simple window:

//CREATOR TOM ZHANG, 12 YEARS OLD

#include <windows.h>
HINSTANCE hinst;
HWND edithwnd, buttonhwnd; //Handles of button and editbox
const char g_szClassName[] = "myWindowClass";
LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam){
    switch(msg){
                case WM_SHOWWINDOW:
                //Create a button
                buttonhwnd = CreateWindowEx(NULL,
        "button",
        "This is a button",
        WS_CHILD | WS_VISIBLE,
        12,
        12,
        49,
        49,
        hwnd,
        NULL,
        hinst,
        NULL);

                //Create the editbox
                buttonhwnd = CreateWindowEx(NULL,
        "EDIT",
        "This is an editbox",
        WS_CHILD | WS_VISIBLE,
        50,
        50,
        100,
        100,
        hwnd,
        NULL,
        hinst,
        NULL);

                                break;
    case WM_CLOSE:
        DestroyWindow(hwnd);
        break;
    case WM_DESTROY:
        PostQuitMessage(0);
        break;
    default:
        return DefWindowProc(hwnd,msg,wParam,lParam);
    }
    return 0;
}
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,LPSTR lpCmdLine, int nCmdShow){
    WNDCLASSEX wc;
    HWND hwnd;
    MSG Msg;

                hinst = hInstance;

    wc.cbSize =sizeof(WNDCLASSEX);
    wc.style = 0;
    wc.lpfnWndProc =WndProc;
    wc.cbClsExtra=0;
    wc.cbWndExtra =0;

    wc.hInstance = hInstance;
    wc.hIcon = LoadIcon(NULL,IDI_APPLICATION);
    wc.hCursor=LoadCursor(NULL,IDC_ARROW);
    wc.hbrBackground=(HBRUSH)(COLOR_WINDOW+1);
    wc.lpszMenuName=NULL;
    wc.lpszClassName=g_szClassName;
    wc.hIconSm = LoadIcon(NULL,IDI_APPLICATION);

    if(!RegisterClassEx(&wc)){
        return 0;
    }

    hwnd = CreateWindowEx(CW_USEDEFAULT,g_szClassName,"Cool Man",WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,500,800,NULL,NULL,hInstance,NULL);
    if(hwnd==NULL){
        return 0;
    }
    ShowWindow(hwnd, nCmdShow);
    UpdateWindow(hwnd);
    MessageBox(NULL,"Visual C++ Coding is much but cool!","From Tom Zhang",MB_OK);
    while(GetMessage(&Msg,NULL,0,0)){
        TranslateMessage(&Msg);
            DispatchMessage(&Msg);
    }
    Msg.wParam;
} 

If you are just getting started then I suggest that you buy a book like "Programming windows by Charles Petzold"
You can also look through the MSDN library for some refrence

[SteveCRM]

Originally posted by abdul
enjoy

Hey stop stealing my line!

[abdul]

hehe...I just quoted your post and changed two numbers in it Check my post again and find the 2 numbers that I changed for Tom

[abdul]

"Programming windows by Charles Petzold"

Get this book and it will get you started in windows programming. I don't know but I found an electronic version of that book at maxcode.com

You can search at that site and you will find that book

[prog_tom]

Well anyways. I can't find that book. Please have a look at this code... that I tried to create a Button with... It doesn't work... The Button is not showwned...

//INPUT NAMES AND AGES:
//ANOTHER ONE FROM TOM
//PROGTZ8894

#include <windows.h>
const char tzID[]="myClassWindow";
HWND but1;
HINSTANCE hInst;
int nCmdShoW;
LRESULT CALLBACK WndProc(HWND hwnd,UINT msg,WPARAM wParam,LPARAM lParam){
	switch(msg){
	case WM_SHOWWINDOW:
		but1=CreateWindowEx(NULL,"button","Submit",WS_CHILD|WS_VISIBLE,100,100,40,20,but1,NULL,hInst,NULL);
			ShowWindow(but1,nCmdShoW);
	UpdateWindow(but1);
		break;
	case WM_CLOSE:
		DestroyWindow(hwnd);
		break;
	case WM_DESTROY:
		PostQuitMessage(0);
		break;
	default:
		return DefWindowProc(hwnd,msg,wParam,lParam);
	}
	return 0;
}
int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR lpCmdLine,int nCmdShow){
	WNDCLASSEX tz;
	HWND hwnd;
	MSG Msg;

	tz.cbSize=sizeof(WNDCLASSEX);
	tz.style=0;
	tz.lpfnWndProc=WndProc;
	tz.cbClsExtra =0;
	tz.cbWndExtra =0;
	tz.hInstance = hInstance;
	tz.hIcon=LoadIcon(NULL,IDI_APPLICATION);
	tz.hCursor=LoadCursor(NULL,IDC_ARROW);
	tz.hbrBackground=(HBRUSH)(COLOR_WINDOW+8);
	tz.lpszMenuName=NULL;
	tz.lpszClassName=tzID;
	tz.hIconSm=LoadIcon(NULL,IDI_APPLICATION);
	if(!RegisterClassEx(&tz)){
		MessageBox(hwnd,"Error while Registering the Program","",MB_OK);
		return 0;
	}
	hwnd=CreateWindowEx(WS_EX_CLIENTEDGE,tzID,"Welcome to my Program!",WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,200,100,NULL,NULL,hInstance,NULL);
	if(hwnd==NULL){
		MessageBox(hwnd,"Errow while Creating the Window","",MB_OK);
		return 0;
	}
	ShowWindow(hwnd,nCmdShow);
	UpdateWindow(hwnd);
	while(GetMessage(&Msg,NULL,0,0)){
		TranslateMessage(&Msg);
		DispatchMessage(&Msg);
	}
	return Msg.wParam;
}

How to declare a CLICK Event for the Button? Do you know how to Set the Icon of the Program? I mean every time I compiled it the ICON is like a DOS Icon! Though in the Program it's not... Do you know how to Center the Window? Like

Private Sub Form_Load()
Me.Move (-me.width+screen.width)/2,(-me.height+screen.height)/2
End Sub

[prog_tom]

Oh and do you guys know how to write to a File in Win32 App Programming? I know how to do it in Console programming...

#include <fstream>
int main(){
ofstream IP("c:\up.txt");
if(IP.Is_Open()){
IP<<"Hey Man\n";
IP.Close();
}
return 0;
}

[TadaTensai]

Visual Basic is event driven. C++ is not. This is how you do it. Notice the parts I changed in your code
[PHP]
//Sample Program for Tom

#include <windows.h>

const char tzID[]="myClassWindow";

#define IDC_BUTTON1 9001
//Notice that I removed your hwnd and made a define statement.
//You'll see why later

HINSTANCE hInst;
//int nCmdShoW; This really isnt necessary

LRESULT CALLBACK WndProc(HWND hwnd,UINT msg,WPARAM wParam,LPARAM lParam){
switch(msg){
case WM_CREATE: //This stuff should really be done in WM_CREATE
CreateWindowEx(NULL,"button","Submit",WS_CHILD|WS_VISIBLE,100,100,40,20,hwnd,(HMENU)IDC_BUTTON1,hIns t,NULL);
break;
case WM_CLOSE:
DestroyWindow(hwnd);
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
case WM_COMMAND:
switch(LOWORD(wParam))
{
case IDC_BUTTON1:
MessageBox(hwnd,"You Clicked the Button!","",0);
//This is where we use the define statement
break;
}
default:
return DefWindowProc(hwnd,msg,wParam,lParam);
}
return 0;
}
int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR lpCmdLine,int nCmdShow){
WNDCLASSEX tz;
HWND hwnd;
MSG Msg;

tz.cbSize=sizeof(WNDCLASSEX);
tz.style=0;
tz.lpfnWndProc=WndProc;
tz.cbClsExtra =0;
tz.cbWndExtra =0;
tz.hInstance = hInstance;
tz.hIcon=LoadIcon(NULL,IDI_APPLICATION);
tz.hCursor=LoadCursor(NULL,IDC_ARROW);
tz.hbrBackground=(HBRUSH)(COLOR_WINDOW+8); //I beleive your only supposed to add 1 to this....?
tz.lpszMenuName=NULL;
tz.lpszClassName=tzID;
tz.hIconSm=LoadIcon(NULL,IDI_APPLICATION);
if(!RegisterClassEx(&tz)){
MessageBox(hwnd,"Error while Registering the Program","",MB_OK);
return 0;
}
hwnd=CreateWindowEx(WS_EX_CLIENTEDGE,tzID,"Welcome to my Program!",WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,200,100,NULL,NULL,hInstance,NULL);
if(hwnd==NULL){
MessageBox(hwnd,"Errow while Creating the Window","",MB_OK);
return 0;
}
ShowWindow(hwnd,nCmdShow);
UpdateWindow(hwnd);
while(GetMessage(&Msg,NULL,0,0)){
TranslateMessage(&Msg);
DispatchMessage(&Msg);
}
return Msg.wParam;
}

[SteveCRM]

"How to declare a CLICK Event for the Button? Do you know how to Set the Icon of the Program? I mean every time I compiled it the ICON is like a DOS Icon! Though in the Program it's not... Do you know how to Center the Window? "


um, I already answered that...the whole WM_COMMAND thing?