绘图函数求助

[wehjkfds]

win32汇编，我用LoadBitmap装入资源位图，然后CreateCompatibleDC为位图建立一个DC，最后用SelectObject将位图装入DC，但是在屏幕并看不到我装入的位图，这是什么原因呢？

[日立奔腾浪潮微软松下联想]

你还得GetDC你的窗口，然后BitBlt。

[lancehbzhang]

[纵横车]

你只是创建了一个有位图的DC，要画在窗口上是需要窗口的DC上有东西，所以你需要把位图DC复制到窗口DC上。怎么复制（应该叫传送）参考BitBlt函数。

[赵4老师]

仅供参考

#pragma comment(lib,"user32")
#pragma comment(lib,"gdi32")
#include <stdlib.h>
#include <conio.h>
#include <windows.h>
HWND WINAPI GetConsoleWindow();
void HideTheCursor() {
    CONSOLE_CURSOR_INFO cciCursor;
    HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
    if (GetConsoleCursorInfo(hStdOut, &cciCursor)) {
        cciCursor.bVisible = FALSE;
        SetConsoleCursorInfo(hStdOut, &cciCursor);
    }
}
void ShowTheCursor() {
    CONSOLE_CURSOR_INFO cciCursor;
    HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
    if (GetConsoleCursorInfo(hStdOut, &cciCursor)) {
        cciCursor.bVisible = TRUE;
        SetConsoleCursorInfo(hStdOut, &cciCursor);
    }
}
int main() {
    HWND  hwnd;
    HDC   hdc;
    HFONT hfont;
    HBITMAP hbm;
    HDC hdcBits;
    BITMAP bm;

    system("color F0");
    system("cls");
    HideTheCursor();
    hwnd  = GetConsoleWindow();
    hdc   = GetDC(hwnd);
    hbm=LoadImage(0,"C:\\Windows\\Soap Bubbles.bmp",IMAGE_BITMAP,0,0,LR_DEFAULTSIZE|LR_LOADFROMFILE);
    if (hbm) {
        hdcBits = CreateCompatibleDC(hdc);
        GetObject (hbm, sizeof(BITMAP), &bm);
        SelectObject(hdcBits,hbm);
        BitBlt(hdc,200,10,bm.bmWidth, bm.bmHeight,hdcBits,0,0,SRCCOPY);
        DeleteDC(hdcBits);
        DeleteObject(hbm);
    }
    hfont = CreateFont(24, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, "华文楷体");
    SelectObject(hdc,hfont);
    SetTextColor(hdc,RGB(255,255,255));
    SetBkMode(hdc,TRANSPARENT);
    TextOut(hdc,210,30,"这个背景是泡泡",14);
    DeleteObject(hfont);
    ReleaseDC(hwnd,hdc);
    getch();
    system("color 07");
    system("cls");
    ShowTheCursor();
    return 0;
}

[大熊猫侯佩]

如上,你要取得屏幕或某个窗口的绘图句柄然后用绘图函数画图才行