borland 5.02 - api/gui

how can I get the below to compile in Borland 5.02

[code]
#include <windows.h>

int WINAPI WinMain(HINSTANCE, HINSTANCE, LPSTR, int)
{
MessageBox(NULL, "Hello world!", "Sample", MB_OK);
return 0;
}
[/code

You need to add parameter names to your function!

Code:

---

// function prototype (which you're not doing, you're adding code)
// both these lines are the same
void blah(int,int);
void blah(int a, int b);

// correct with code
void blah(int a, int b) { /*...*/ }

---

I dont understand what you are trying to tell me.

What error message do you get when you compile?

Quote:

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I dont understand what you are trying to tell me.

---

Speedy5 is trying to tell you that HINSTANCE, LPSTR, and int are DATA TYPES, not variable values! I don't have my windows programming book with me, and I don't remember how to get these values. But, they are supposed to come from an existing window. HINSTANCE = handle to window instance, LPSTR = long pointer to string,, you know what an int is.. (I think the 2nd HINSTANCE can be NULL?)

You have to pass values (or pointers, or references) to a function.

Windows programming is NOT EASY! But I think there are some short-cuts if you just want a message box.

BTW - The datatypes are the just the "normal" types renamed with "typedef" in windows.h

Code:

---

#include <windows.h> 

int main()
{
    char Message[] = "Here's the message!!!";
    char Title[] = "My Message Box";
    int Button = MB_OK;    // Defined in windows.h

    MessageBox(NULL, Message, Title, Button);

return 0; 
}

---

From Microsoft Visual C++ documentation:

int MessageBox(
HWND hWnd, // handle of owner window
LPCTSTR lpText, // address of text in message box
LPCTSTR lpCaption, // address of title of message box
UINT uType // style of message box

);

I assume that the borland compiler is similar.