Загрузка изображений и файлов в принципе

hBitmap = LoadImage(NULL, "C://file.bmp", IMAGE_BITMAP, 0,0, LR_LOADFROMFILE);

#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
LRESULT CALLBACK DCDemoWndProc ( HWND, UINT, UINT, LONG );
int WINAPI WinMain ( HINSTANCE hInstance, HINSTANCE hPrevInstance,
                     LPSTR IpszCmdParam, int nCmdShow )
{
HWND hWnd ;
WNDCLASS WndClass;
MSG Msg;
char szClassName[] = "DCDemo";
WndClass.style = CS_HREDRAW | CS_VREDRAW;
WndClass.lpfnWndProc = DCDemoWndProc;
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 = "MyMenu";
WndClass.lpszClassName = szClassName;
if (!RegisterClass(&WndClass))
{
MessageBox(NULL,"Cannot register class","Error",MB_OK);
return 0;
}
hWnd = CreateWindow(szClassName, "Program No 1",
                     WS_OVERLAPPEDWINDOW,
                     CW_USEDEFAULT, CW_USEDEFAULT,
                     CW_USEDEFAULT, CW_USEDEFAULT,
                     NULL, NULL,
                     hInstance, NULL);
if(!hWnd)
{
MessageBox(NULL,"Cannot create window","Error",MB_OK);
return 0;
}
/* Show our window */
ShowWindow(hWnd,nCmdShow);
UpdateWindow(hWnd);
/* Beginning of messages cycle */
while(GetMessage(&Msg, NULL, 0, 0))
{
TranslateMessage(&Msg);
DispatchMessage(&Msg);
}
return Msg.wParam;
}
LRESULT CALLBACK DCDemoWndProc(HWND hWnd, UINT Message,
                                   UINT wParam, LONG IParam )
{
HDC hDC,hCompatibleDC;
PAINTSTRUCT PaintStruct;
HANDLE hOldBitmap;
HANDLE hBitmap;
RECT Rect;
BITMAP Bitmap;
switch(Message)
{
case WM_PAINT:
 
hDC = BeginPaint(hWnd, &PaintStruct);
 
hBitmap =(HBITMAP)LoadImage(NULL,"E:\\supermario.bmp",IMAGE_BITMAP,0,0,LR_LOADFROMFILE); 
 
 
GetObject(hBitmap,sizeof(BITMAP),&Bitmap);
 
hCompatibleDC = CreateCompatibleDC(hDC);
 
hOldBitmap = SelectObject(hCompatibleDC,hBitmap);
 
GetClientRect(hWnd,&Rect);
 
StretchBlt(hDC,0,0,Rect.right,Rect.bottom,
          hCompatibleDC,0,0,Bitmap.bmWidth,
          Bitmap.bmHeight,SRCCOPY);
 
SelectObject(hCompatibleDC,hOldBitmap);
 
DeleteObject(hBitmap);
 
DeleteDC(hCompatibleDC);
 
EndPaint(hWnd,&PaintStruct);
return 0;
case WM_DESTROY:
PostQuitMessage(0);
return 0;
 }
return DefWindowProc(hWnd,Message,wParam, IParam);
}

hBitmap =(HBITMAP)LoadImage(NULL,"C:\\test.bmp",IMAGE_BITMAP,0,0,LR_LOADFROMFILE);
if(hBitmap != NULL)
{
     SetWindowText(hWnd, "success");
}
else
{
     char buf[256];
     DWORD dwErr = GetLastError();
     sprintf(buf, "Error %u: ", dwErr);
     FormatMessage(0x1000, 0, dwErr, 0, &buf[lstrlen(buf)], 256-lstrlen(buf), 0);
     if(char *p = strrchr(buf, '\r'))
        *p = '\0';
     SetWindowText(hWnd, buf);
}