Why cant I compile a simple GDI+ example with Visual Studio 2008 Express C++?

Question

 

I copied the following simple GDI+ example into Visual Studio 2008 Express C++

 

//#define UNICODE

#include "stdafx.h"

#include <gdiplus.h>

using namespace Gdiplus;

VOID OnPaint(HDC hdc)

{

Graphics graphics(hdc);

Pen pen(Color(255, 0, 0, 255));

graphics.DrawLine(&pen, 0, 0, 200, 100);

}

LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);

INT WINAPI WinMain(HINSTANCE hInstance, HINSTANCE, PSTR, INT iCmdShow)

{

HWND hWnd;

MSG msg;

WNDCLASS wndClass;

GdiplusStartupInput gdiplusStartupInput;

ULONG_PTR gdiplusToken;

// Initialize GDI+.

GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);

wndClass.style = CS_HREDRAW | CS_VREDRAW;

wndClass.lpfnWndProc = WndProc;

wndClass.cbClsExtra = 0;

wndClass.cbWndExtra = 0;

wndClass.hInstance = hInstance;

wndClass.hIcon = LoadIcon(NULL, IDI_APPLICATION);

wndClass.hCursor = LoadCursor(NULL, IDC_ARROW);

wndClass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);

wndClass.lpszMenuName = NULL;

wndClass.lpszClassName = TEXT("GettingStarted");

RegisterClass(&wndClass);

hWnd = CreateWindow(

TEXT("GettingStarted"), // window class name

TEXT("Getting Started"), // window caption

WS_OVERLAPPEDWINDOW, // window style

CW_USEDEFAULT, // initial x position

CW_USEDEFAULT, // initial y position

CW_USEDEFAULT, // initial x size

CW_USEDEFAULT, // initial y size

NULL, // parent window handle

NULL, // window menu handle

hInstance, // program instance handle

NULL); // creation parameters

ShowWindow(hWnd, iCmdShow);

UpdateWindow(hWnd);

while(GetMessage(&msg, NULL, 0, 0))

{

TranslateMessage(&msg);

DispatchMessage(&msg);

}

GdiplusShutdown(gdiplusToken);

return msg.wParam;

} // WinMain

LRESULT CALLBACK WndProc(HWND hWnd, UINT message,

WPARAM wParam, LPARAM lParam)

{

HDC hdc;

PAINTSTRUCT ps;

switch(message)

{

case WM_PAINT:

hdc = BeginPaint(hWnd, &ps);

OnPaint(hdc);

EndPaint(hWnd, &ps);

return 0;

case WM_DESTROY:

PostQuitMessage(0);

return 0;

default:

return DefWindowProc(hWnd, message, wParam, lParam);

}

} // WndProc

 

And when I compile I get a bunch of errors starting with:

 

1>------ Build started: Project: GDITest, Configuration: Debug Win32 ------

1>Compiling...

1>GDITest.cpp

1>c:\program files\microsoft sdks\windows\v6.0a\include\gdiplusimaging.h(74) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int

1>c:\program files\microsoft sdks\windows\v6.0a\include\gdiplusimaging.h(74) : error C2440: 'initializing' : cannot convert from 'const char [37]' to 'int'

1> There is no context in which this conversion is possible

1>c:\program files\microsoft sdks\windows\v6.0a\include\gdiplusimaging.h(74) : error C2146: syntax error : missing ';' before identifier 'IImageBytes'

1>c:\program files\microsoft sdks\windows\v6.0a\include\gdiplusimaging.h(74) : error C2470: 'IImageBytes' : looks like a function definition, but there is no parameter list; skipping apparent body

1>c:\program files\microsoft sdks\windows\v6.0a\include\gdiplusimaging.h(74) : error C2059: syntax error : 'public'

1>c:\program files\microsoft sdks\windows\v6.0a\include\gdiplusimaging.h(280) : error C2146: syntax error : missing ';' before identifier 'id'

1>c:\program files\microsoft sdks\windows\v6.0a\include\gdiplusimaging.h(280) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int

1>c:\program files\microsoft sdks\windows\v6.0a\include\gdiplusimaging.h(280) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int

1>c:\program files\microsoft sdks\windows\v6.0a\include\gdiplusheaders.h(384) : error C2061: syntax error : identifier 'IStream'

1>c:\program files\microsoft sdks\windows\v6.0a\include\gdiplusheaders.h(395) : error C2061: syntax error : identifier 'IStream'

1>c:\program files\microsoft sdks\windows\v6.0a\include\gdiplusheaders.h(405) : error C2061: syntax error : identifier 'IStream'

1>c:\program files\microsoft sdks\windows\v6.0a\include\gdiplusheaders.h(443) : error C2061: syntax error : identifier 'PROPID'

1>c:\program files\microsoft sdks\windows\v6.0a\include\gdiplusheaders.h(444) : error C2061: syntax error : identifier 'PROPID'

1>c:\program files\microsoft sdks\windows\v6.0a\include\gdiplusheaders.h(445) : error C2061: syntax error : identifier 'PROPID'

1>c:\program files\microsoft sdks\windows\v6.0a\include\gdiplusheaders.h(453) : error C2061: syntax error : identifier 'PROPID'

1>c:\program files\microsoft sdks\windows\v6.0a\include\gdiplusheaders.h(471) : error C2535: 'Gdiplus::Image::Image(void)' : member function already defined or declared

1> c:\program files\microsoft sdks\windows\v6.0a\include\gdiplusheaders.h(384) : see declaration of 'Gdiplus::Image::Image'

1>c:\program files\microsoft sdks\windows\v6.0a\include\gdiplusheaders.h(505) : error C2061: syntax error : identifier 'IStream'

1>c:\program files\microsoft sdks\windows\v6.0a\include\gdiplusheaders.h(516) : error C2061: syntax error : identifier 'IStream'

1>c:\program files\microsoft sdks\windows\v6.0a\include\gdiplusheaders.h(758) : error C2061: syntax error : identifier 'IStream'

1>c:\program files\microsoft sdks\windows\v6.0a\include\gdiplusheaders.h(813) : error C2061: syntax error : identifier 'IStream'

 

Am I missing something really obvious here?

 

Thanks,

 

 

 

Answer 1

Edit stdafx.h and add this line:

#include <windows.h>

Answer 2

#include <objbase.h>

 

This header is included by a lot of stuff, such as the DirectX libs, and eventually includes the necessary stuff. This should be considered a bug I think. The <gdiplus.h> lib should include it itself.

Answer 3

No.  Any Windows project should #include <windows.h> first.  Proper include order is important.

Answer 4

comment this line in stdafx.h
#define WIN32_LEAN_AND_MEAN

will resovle this problem

Answer 5

Thx!!!

really helpful, it happen with some many program ported to VS2008