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HomerSexual
Grandmaster Cheater Supreme
 Reputation: 5
Joined: 03 Feb 2007
Posts: 1657
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 Posted: Wed Aug 01, 2007 9:07 am Post subject: c++ making a button do something |
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| Code: | LRESULT CALLBACK WndProc(HWND hwnd, UINT Message, WPARAM wParam, LPARAM lParam) {
HWND hButton;
switch(Message) {
case WM_CREATE:
hButton = CreateWindowEx(NULL, "Button", "Button Example",
WS_BORDER | WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON,
0, 0,
110, 30,
hwnd, NULL,
zhInstance, NULL);
break;
case WM_CLOSE:
DestroyWindow(hwnd);
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
default:
return DefWindowProc(hwnd, Message, wParam, lParam);
}
return 0;
} |
heres my cases for WndProc
as you can tell i added a button onto the form, but how do i make the button do something?
and can anyone point me to a good c++ gui tutorial (in-depth is nice)
and appal your right, the little bit of masm i know lets me understand that code ^.^
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Noz3001
I'm a spammer
 Reputation: 26
Joined: 29 May 2006
Posts: 6220
Location: /dev/null
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| Posted: Wed Aug 01, 2007 9:13 am Post subject: |
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| Create it in InitInstance();
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HomerSexual
Grandmaster Cheater Supreme
Reputation: 5
Joined: 03 Feb 2007
Posts: 1657
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| Posted: Wed Aug 01, 2007 10:03 am Post subject: |
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the following compiles fine*
| Code: | #include <windows.h>
#define IDC_BUTTON 100
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
static char sClassName[] = "MyClass";
static HINSTANCE zhInstance = NULL;
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine,
int nCmdShow) {
WNDCLASSEX WndClass;
HWND hwnd;
MSG Msg;
zhInstance = hInstance;
WndClass.cbSize = sizeof(WNDCLASSEX);
WndClass.style = NULL;
WndClass.lpfnWndProc = WndProc;
WndClass.cbClsExtra = 0;
WndClass.cbWndExtra = 0;
WndClass.hInstance = zhInstance;
WndClass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
WndClass.hCursor = LoadCursor(NULL, IDC_ARROW);
WndClass.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
WndClass.lpszMenuName = NULL;
WndClass.lpszClassName = sClassName;
WndClass.hIconSm = LoadIcon(NULL, IDI_APPLICATION);
if(!RegisterClassEx(&WndClass)) {
MessageBox(0, "Error Registering Class!", "Error!", MB_ICONSTOP | MB_OK);
return 0;
}
hwnd = CreateWindowEx(WS_EX_STATICEDGE, sClassName, "but", WS_OVERLAPPEDWINDOW, CW_USEDEFAULT,
CW_USEDEFAULT,
110, 60, NULL, NULL, zhInstance, NULL);
if(hwnd == NULL) {
MessageBox(0, "Error Creating Window!", "Error!", MB_ICONSTOP | MB_OK);
return 0;
}
ShowWindow(hwnd, nCmdShow);
UpdateWindow(hwnd);
while(GetMessage(&Msg, NULL, 0, 0)) {
TranslateMessage(&Msg);
DispatchMessage(&Msg);
}
return Msg.wParam;
}
void onClickMyButton(HWND hWnd)
{
MessageBox(hWnd, "You you clicked me!!", "I was Clicked", MB_OK);
}
LRESULT CALLBACK WndProc(HWND hwnd, UINT Message, WPARAM wParam, LPARAM lParam) {
HWND hButton;
switch(Message) {
case WM_CREATE:
hButton = CreateWindowEx(NULL, "Button", "Button Example",
WS_BORDER | WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON,
0, 0,
110, 30,
hwnd, (HMENU)IDC_BUTTON,
zhInstance, NULL);
break;
case WM_COMMAND:
if (LOWORD(wParam) == IDC_BUTTON)
{
HWND hWnd;
onClickMyButton(hWnd);
}
else{}
break;
case WM_CLOSE:
DestroyWindow(hwnd);
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
default:
return DefWindowProc(hwnd, Message, wParam, lParam);
}
return 0;
} |
ok i defined my button name
i put in the WM_COMMAND code to check for my buttons name
i put in the onClickMyButton function
i called it...
wtf is wrong?
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lurc
Grandmaster Cheater Supreme
 Reputation: 2
Joined: 13 Nov 2006
Posts: 1900
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| Posted: Wed Aug 01, 2007 10:31 am Post subject: |
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did u create that function urself or did u actually double clikc the button on ur UI....
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UnLmtD
Grandmaster Cheater
 Reputation: 0
Joined: 13 Mar 2007
Posts: 894
Location: Canada
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| Posted: Wed Aug 01, 2007 10:39 am Post subject: |
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Weren't you coding in Delphi like a week ago and now you want to code GUI in C++? I suggest you to start with CLI first and learn the basics.
Anyways, did you check this out http://www.winprog.org/tutorial/
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HomerSexual
Grandmaster Cheater Supreme
Reputation: 5
Joined: 03 Feb 2007
Posts: 1657
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| Posted: Wed Aug 01, 2007 10:43 am Post subject: |
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i used to code c++ awhile ago, so i remember alot
i did all cmd line so now im gonna do gui
i quit because dev cpp was fucking up everything
edit: lurc im using code blocks not vc++
there is no fancy button to drag and drop
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hcavolsdsadgadsg
I'm a spammer
![]() Reputation: 26
Joined: 11 Jun 2007
Posts: 5801
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| Posted: Wed Aug 01, 2007 10:56 am Post subject: |
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Getting a nice resource editor would make things easier for one. If the IDE doesn't have one, ResEd is good.
Also seconding http://www.winprog.org/tutorial/
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assaf84
Expert Cheater
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Joined: 03 Oct 2006
Posts: 238
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| Posted: Wed Aug 01, 2007 11:29 am Post subject: |
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Idk a lot about coding GUI's in C++, but this looks not ok:
| Code: |
HWND hWnd;
onClickMyButton(hWnd);
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You pass the function an "empty" HWND u just created? I don't know a lot about this, but try using hwnd instead of hWnd..
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appalsap
Moderator
 Reputation: 0
Joined: 27 Apr 2006
Posts: 6753
Location: Pakistan
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| Posted: Wed Aug 01, 2007 11:32 am Post subject: |
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edit: nevermind, I was wrong about the hmenu identifier. Second of all, it's a local variable, make it global, else you won't be able to use it the next time it's called. Third of all, what you need to do is:
when you button is clicked, it will send a WM_COMMAND message to the parent window (the window for which you have a wndproc). the hi word of wParam will be BN_CLICKED. the low word of wParam will be the button identifier (hwnd)
want to learn by example? see this.
Last edited by appalsap on Thu Aug 02, 2007 10:14 am; edited 1 time in total |
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Stallios
How do I cheat?
![]() Reputation: 0
Joined: 02 Aug 2007
Posts: 3
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| Posted: Thu Aug 02, 2007 10:04 am Post subject: |
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here's how I got it done :
| Code: |
//Global Variable
#define BTN_OK 1
//WinMain
bBTN_OK = CreateWindow(
"BUTTON",
"Go!",
WS_VISIBLE | WS_CHILD | BS_DEFPUSHBUTTON,
15,
10,
100,
40,
hMainWindow,
(HMENU)BTN_OK,
hInstance,
NULL);
//Windows Process
switch(msg)
{
case WM_COMMAND:
switch(wParam)
{
case BTN_OK:
break;
}
}
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HomerSexual
Grandmaster Cheater Supreme
Reputation: 5
Joined: 03 Feb 2007
Posts: 1657
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| Posted: Thu Aug 02, 2007 9:53 pm Post subject: |
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lawl i just reformatted and had to get this file again thank god i put it up a few posts
i was looking and
| Code: | void onClickMyButton(HWND hWnd)
{
MessageBox(hWnd, "You you clicked me!!", "I was Clicked", MB_OK);
} |
notice the way i pass hWnd not hwnd -_-
i overlooked it
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