C++ GDI 绘制直线问题

[command_wyc]

#include <Windows.h>

void GDI_Out(HDC hdc)
{
HPEN hpen,hpenOld;
BYTE bRed = 0;
BYTE bGreen = 0;
BYTE bBlue = 0;
COLORREF cPen = RGB(bRed,bGreen,bBlue);
hpen = CreatePen(PS_SOLID,6,cPen);
hpenOld = SelectObject(hdc, hpen);
LineTo(hdc,600,500);
DeleteObject(hpen);
}

int WINAPI WinMain(
HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow
)
{
HDC gdi_hdc = GetDC(NULL);
GDI_Out(gdi_hdc);
ReleaseDC(NULL,gdi_hdc);
}

[command_wyc]

上面那段代码，在VS2008中编译会出问题
错误 1 error C2440: “=”: 无法从“HGDIOBJ”转换为“HPEN” e:\Win\Win\Main.cpp 11 Win

[mengde007]

hpenOld = (HPEN)SelectObject(hdc, hpen);
强制转化下……

[command_wyc]

楼上说的早试过了，一样不行