[問題] 請問一下BitBlt這個函數

[chrishappy11 ()]

請問一下各位高手

小弟我在API裡用BitBlt來畫圖,bitmap來源檔也建好了

// Microsoft Visual C++ generated resource script.
//
#include "resource.h"
#define APSTUDIO_READONLY_SYMBOLS
// Bitmap
//
//IDB_BITMAP1             BITMAP                  "IDC_MAP1.bmp"

但是執行後就是畫不出來
請問各位大大,這是那邊有錯?

LRESULT CALLBACK WndProc(HWND hWnd, UINT msg, WPARAM wp, LPARAM lp)
{
        HDC hdc,hdc1;
        PAINTSTRUCT ps;
        BITMAP bmpt;
        HBITMAP bmp1;
        switch (msg) {
            case WM_PAINT:
                    bmp1=(HBITMAP)LoadImage(hInst,TEXT("IDB_BITMAP1"),IMAGE_BITMAP,0,0,LR_DEFAULTCOLOR);
                        GetObject(bmp1,(int)sizeof(BITMAP),&bmpt);
            hdc=BeginPaint(hWnd,&ps);
                        hdc1=CreateCompatibleDC(hdc);
                        SelectObject(hdc,hdc1);
                        BitBlt(hdc1,0,0,200,300,hdc,0,0,SRCCOPY);
                        TextOut(hdc,10,10,TEXT("TEST"),4);
                        break;
                case WM_DESTROY:
                        PostQuitMessage(0);
                        break;
                default:
                        return (DefWindowProc(hWnd, msg, wp, lp));
        }
        return 0;
}

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