Thread: First real WinAPI program...

Recently I've been working on a Click and Create extention and the ease of useing dialogs struck me, so as a side project I started "CK-Prog" for lack of the better name at the time, I planned it to be a simple app that Created a Dialog and that'll be the main window.

But now I've come across a seemingly novice problem, CreateDialog() isn't working, heres the code:

main.cpp -- Sence I very much think the problem is only in main.cpp, I've only put main.cpp source in.

Code:

/*-- CK-Prog
 *
 *
 *
 */

#include "main.h"

int mainProc(HWND hwnd, UINT Message, WPARAM wParam, LPARAM lParam)
{
    char hi[100],tmphi[100];
	
	switch(Message)
    {
        case WM_INITDIALOG:
			SetDlgItemText(hwnd, ID_NAME_EB, "ck4r1");

			return 0;
        case WM_COMMAND:
            switch(LOWORD(wParam))
            {
                case ID_EXIT:
                    EndDialog(hwnd, ID_EXIT);
					break;

				case ID_INFO:
					MessageBox(NULL,"\tCK-Prog\nCKarl's first real program with WinAPI.\n\n(C) Karl 2004","CK-Prog",MB_OK);

					break;

				case ID_HELLO: // clicked "Hello!"
					GetDlgItemText(hwnd, ID_NAME_EB, tmphi, 100);
					//^ Put the edit box text into a tmp buffer
					wsprintf(hi,"Hello %s",tmphi);
					//^ put the tmp buffer with "Hello" into hi
					MessageBox(hwnd, hi,"Hello!",MB_OK);
					//^ pops up the MsgBox with your name in it!
					break;
            }
        break;
        default:
			return 1;
    }
    return 0;
}

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,LPSTR lpCmdLine, int nCmdShow)
{
	HWND WIN_MAIN = NULL;

	WIN_MAIN = CreateDialog(GetModuleHandle(NULL), MAKEINTRESOURCE(ID_MAIN), NULL, mainProc);

	if(WIN_MAIN == NULL)
		MessageBox(WIN_MAIN, "'WIN_MAIN' did not open correctly!","ERROR!",MB_OK | MB_ICONINFORMATION);

	
	return(0);// no error
}

and if anyone finds other problems that might make it go in a undesireble way, plz post it.

Here is the error:

C:\Programs\CKProg\main.cpp(53) : error C2664: 'CreateDialogParamA' : cannot convert parameter 4 from 'int (void *,unsigned int,unsigned int,long)' to 'int (__stdcall *)(void)'


THX, CK4R1 0U7

I do that and I get 27 errors:
C:\Programs\CKProg\main.cpp(9) : error C2501: 'INT_PTR' : missing decl-specifiers
C:\Programs\CKProg\main.cpp(9) : error C2239: unexpected token '__stdcall' following declaration of 'INT_PTR'
C:\Programs\CKProg\main.cpp(9) : error C2059: syntax error : '__stdcall'
C:\Programs\CKProg\main.cpp(13) : error C2143: syntax error : missing ';' before 'switch'
C:\Programs\CKProg\main.cpp(18) : error C2143: syntax error : missing ';' before 'return'
C:\Programs\CKProg\main.cpp(19) : error C2143: syntax error : missing ';' before 'case'
C:\Programs\CKProg\main.cpp(24) : error C2143: syntax error : missing ';' before 'break'
C:\Programs\CKProg\main.cpp(26) : error C2143: syntax error : missing ';' before 'case'
C:\Programs\CKProg\main.cpp(31) : error C2143: syntax error : missing ';' before 'break'
C:\Programs\CKProg\main.cpp(33) : error C2143: syntax error : missing ';' before 'case'
C:\Programs\CKProg\main.cpp(36) : error C2065: 'hi' : undeclared identifier
C:\Programs\CKProg\main.cpp(36) : error C2065: 'tmphi' : undeclared identifier
C:\Programs\CKProg\main.cpp(36) : error C2501: 'wsprintfA' : missing decl-specifiers
C:\Programs\CKProg\main.cpp(36) : error C2040: 'wsprintfA' : 'int' differs in levels of indirection from 'int (char *,const char *,...)'
C:\Programs\CKProg\main.cpp(38) : error C2065: 'hwnd' : undeclared identifier
C:\Programs\CKProg\main.cpp(38) : error C2501: 'MessageBoxA' : missing decl-specifiers
C:\Programs\CKProg\main.cpp(38) : error C2040: 'MessageBoxA' : 'int' differs in levels of indirection from 'int (void *,const char *,const char *,unsigned int)'
C:\Programs\CKProg\main.cpp(40) : error C2143: syntax error : missing ';' before 'break'
C:\Programs\CKProg\main.cpp(41) : error C2143: syntax error : missing ';' before '}'
C:\Programs\CKProg\main.cpp(43) : error C2143: syntax error : missing ';' before 'default'
C:\Programs\CKProg\main.cpp(45) : error C2143: syntax error : missing ';' before '}'
C:\Programs\CKProg\main.cpp(47) : error C2143: syntax error : missing ';' before '}'
C:\Programs\CKProg\main.cpp(53) : error C2501: 'WIN_MAIN' : missing decl-specifiers
C:\Programs\CKProg\main.cpp(53) : error C2065: 'mainProc' : undeclared identifier
C:\Programs\CKProg\main.cpp(55) : error C2143: syntax error : missing ';' before 'if'
C:\Programs\CKProg\main.cpp(59) : error C2143: syntax error : missing ';' before 'return'
C:\Programs\CKProg\main.cpp(60) : error C2143: syntax error : missing ';' before '}'

You need the latest SDK to access the latest Windows Data Types:
http://msdn.microsoft.com/library/en...data_types.asp

INT_PTR is 32-bits in size for 32-bit Windows, and 64-bits in size for 64-bit Windows, so that it always matches the size of a pointer. Therefore, to have code compatible with both versions of Windows, you should use it whenever you need a variable to do pointer arithmetic.

Btw, since you are NOT using the latest SDK, then you should be able to compile the program using the OLD style DialogProc, like so:

BOOL CALLBACK DialogProc( HWND hwndDlg,
UINT uMsg,
WPARAM wParam,
LPARAM lParam
);

So, basically, you forgot that CALLBACK calling convention, since BOOL is equivalent to int.