Question

vs2008用c++编写程序调用一幅图片，并在用户窗口区上显示。 表示窗口能出来图片出不来！

#include <windows.h>
#include <string.h>
#include <stdio.h>

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

//定义变量

HDC hdc;//设备环境句柄

HDC hdcmem;//内存设备环境句柄

HBITMAP hBm;//位图句柄

BITMAP bm;//BITMAP结构
int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInst, LPSTR lpszCmdLine,int nCmdShow)

{HWND hwnd;

MSG Msg ;

WNDCLASS wndclass ;

char lpszClassName[] ="位图";

char lpszTitle[]="Example_For_BitMap";
wndclass.style= 0;

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( BLACK_BRUSH) ;

wndclass.lpszMenuName = NULL ;

wndclass.lpszClassName = lpszClassName ;

if( !RegisterClass( &wndclass))

{
MessageBeep(0) ;

return FALSE ;

}

hwnd = CreateWindow(lpszClassName,lpszTitle,WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,NULL,NULL,hInstance,NULL) ;
//加载位图

hBm=LoadBitmap(hInstance,"yang.bmp");

//获取位图尺寸

GetObject(hBm, sizeof( BITMAP), (LPVOID)&bm) ;

ShowWindow(hwnd, nCmdShow) ;

UpdateWindow(hwnd);

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

{
TranslateMessage( &Msg) ;

DispatchMessage( &Msg) ;

}
case WM_PAINT://显示图片

hdc=BeginPaint(hwnd,&ps);

SelectObject(hdcmem,hBm); //将位图选入内存设备环境

//调用函数BitBlt将内存设备环境中的位图拷贝到设备环境中

BitBlt(hdc,180,80,bm.bmWidth,bm.bmHeight,hdcmem,0,0,SRCCOPY);

EndPaint(hwnd,&ps); //释放设备环境句柄

break;
case WM_DESTROY:

DeleteObject(hBm); //释放位图

PostQuitMessage(0);

break;

default:

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

}

return 0;
}

Answer 1

既然是vs,为啥不用Easyx?Easyx也有GetImageHDC

Answer 2

我只想说你这是正儿八经的C语言....windowsSDK........
不是C++...............

追问

时隔五年～我都不晓得我还提过这个问题～哈哈哈～