C++ Window basics

[Active X]

Hello to everyone reading this .

I wanna use windows in C++ but I'm too confused of referring to resources about how to write a program in C++ to create a window .

Could provide help ? Will be thankful :thumbsup:

[Inigoesdr]

Try out wxWidgets (http://www.wxwidgets.org/).

[Active X]

However didn't find THAT useful but Tanks anyway ! ;-)

[oracleguy]

However didn't find THAT useful but Tanks anyway ! ;-)

Well if you don't want to use the Win32 Native API (or whatever native API is for the OS you are using) then using a framework like wxWidgets (or qt) is really your only option.

If you don't want to use a framework perhaps you can elaborate on what part you are having confusion over.

[Active X]

I wanna use WIN32 API , But I don't know HOW ! My problem is this !

As a matter of fact , I've refered to many resources , But none of them has completely explained what happens in the code and has not explained why am I writing those strage pieces of code !

Could someone tell me about that ?

[Bookworm9405]

Well, really, your only options for a GUI in C++ have already been mentioned - wxWidgets or the win32 API. Try here (http://www.functionx.com/win32/index.htm), for example, but there are loads of other tutorials on Google. Personally, I think Java or Visual Basic might be easier for a GUI, but you can do it in C++ if you realy want...

[oracleguy]

If you aren't adverse to technical books, this is a good one that teaches the Win32 API: http://www.amazon.com/Programming-Windows-Fifth-Charles-Petzold/dp/157231995X/ref=sr_1_1/103-9642284-7671020?ie=UTF8&s=books&qid=1194544710&sr=1-1

It is a big book and covers a lot of material.

[Active X]

Hi to all again ,

I found a complete resource for windows programming in C++ .
I've written this program :


#include<windows.h>
LRESULT CALLBACK WinProc(HWND hwnd, UINT Msg, WPARAM wParam,
LPARAM lParam)
{
switch (Msg)
{
case WM_DESTROY:
PostQuitMessage(0);
return 0;
default:
break;
}
return DefWindowProc(hwnd, Msg, wParam, lParam);
}

int WINAPI WinMain(HINSTANCE hThisInst, HINSTANCE hPrevInst,
LPSTR lpCmdLine, int nShowCmd)
{
WNDCLASSEX myWin;
MSG msgObj;

myWin.cbClsExtra = 0;
myWin.cbSize = sizeof(myWin);
myWin.cbWndExtra = 0;
myWin.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
myWin.hCursor = LoadCursor(hThisInst, IDC_ARROW);
myWin.hIcon = LoadIcon(hThisInst, IDI_APPLICATION);
myWin.hIconSm = NULL;
myWin.hInstance = hThisInst;
myWin.lpfnWndProc = WinProc;
myWin.lpszClassName = (LPCWSTR)"winClass";
myWin.lpszMenuName = NULL;
myWin.style = CS_VREDRAW | CS_HREDRAW;

RegisterClassEx(&myWin);

CreateWindowEx(NULL, (LPCWSTR)"winClass", (LPCWSTR)"Windows App", NULL, CW_USEDEFAULT,
CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,NULL, NULL, hThisInst,
NULL);

while (GetMessage(&msgObj, NULL, 0, 0))
{
TranslateMessage(&msgObj);
DispatchMessage(&msgObj);
}
return (int)msgObj.wParam;
}


and I've got this error :

In Visual studio 2005 .net -> Visual C++ :

Error 1 error LNK2019: unresolved external symbol _main referenced in function ___tmainCRTStartup MSVCRTD.lib

In Borland C++ builder X , I can compile the program , but I can't see my window !

Will be really thakful to your helps !

[Aradon]

I know that when I get that error in visual studio it is typically complaining that I don't have a main function (int main(void) { } ) but I'm unsure how exactly the WinAPI works in conjunction with the standard main, as I am learning C++ as we speak :X

[Active X]

Thank you for your post Aradon ,

I corrected it myself . The problem was here that I had defined a WIN32 Console project .
After that , I got a problem with LPCWSTR but I corrected it by changing project character set to Not set .

But now , I've got another problem .

I've made a Menu.rc and compiled it to Menu.res . I set the lpszMenuName property of my window object to "IDR_MENU1" .

I don't get an error , But menu doesn't appear !

Could you help me please ?