[已解决]"int *" 类型的实参与 "const DWORD *" 类型的形参不兼容

苏宁365

/* -------------------------------------------------------------------
                    MyWindows.c -- 基本窗口模型
                                《Windows 程序设计（SDK）》视频教程
--------------------------------------------------------------------*/

#include <windows.h>

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

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int iCmdShow)
{
    static TCHAR szAppName[] = TEXT("MyWindows");
    HWND hwnd;
    MSG msg;
    WNDCLASS wndclass;

    wndclass.style = CS_HREDRAW | CS_VREDRAW;
    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(WHITE_BRUSH);
    wndclass.lpszMenuName = NULL;
    wndclass.lpszClassName = szAppName;

    if (!RegisterClass(&wndclass))
    {
        MessageBox(NULL, TEXT("这个程序需要在 Windows NT 才能执行！"), szAppName, MB_ICONERROR);
        return 0;
    }

    hwnd = CreateWindow(szAppName,
        TEXT("苏宁程序"),
        WS_OVERLAPPEDWINDOW,
        CW_USEDEFAULT,
        CW_USEDEFAULT,
        CW_USEDEFAULT,
        CW_USEDEFAULT,
        NULL,
        NULL,
        hInstance,
        NULL);

    ShowWindow(hwnd, iCmdShow);
    UpdateWindow(hwnd);

    while (GetMessage(&msg, NULL, 0, 0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }

    return msg.wParam;
}

LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    HDC hdc;
    PAINTSTRUCT ps;
    RECT rect;
    POINT apt[] = { 50,20,20,60,80,60,50,20,70,20,100,60,130,20,70,20,150,20,150,60,190,60,190,20,150,20,};
    int asz[] = { 4,4,5 };
    switch (message)
    {
    case WM_PAINT:
        hdc = BeginPaint(hwnd, &ps);
        PolyPolyline(hdc, apt, asz,3);
        //LineTo(hdc, 100, 100);
        EndPaint(hwnd, &ps);
        return 0;

    case WM_DESTROY:
        PostQuitMessage(0);
        return 0;
    }

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

最佳答案

月排行榜 / 总排行榜

菜菜菜死了

2023-8-17 17:14:41

苏宁365 发表于 2020-3-11 16:47
int asz[] = { 4,4,5 }; 无法将参数转换为const DWORD 这个问题怎么解决！

加个强制转换就好啦 PolyPolyline(hdc, apt, (const DWORD*)asz, 3);

跳转到最佳答案楼层

苏宁365

int asz[] = { 4,4,5 }; 无法将参数转换为const DWORD 这个问题怎么解决！

菜菜菜死了

苏宁365 发表于 2020-3-11 16:47
int asz[] = { 4,4,5 }; 无法将参数转换为const DWORD 这个问题怎么解决！

加个强制转换就好啦 PolyPolyline(hdc, apt, (const DWORD*)asz, 3);