const LPSTR szClassName = "sdfkljs"
const LPSTR szWindowName = "sdfk"
const LPSTR szChildClassName = "asdfklajd"
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM)
LRESULT CALLBACK ChildProc(HWND, UINT, WPARAM, LPARAM)
WNDCLASSEX wc
HWND hwnd1,hwnd2
HINSTANCE hInst
int nCmdShow
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR szCmdLine, int nCmdShow){
::nCmdShow = nCmdShow
::hInst = hInstance
wc.cbSize = sizeof(wc)
wc.style = CS_HREDRAW | CS_VREDRAW
wc.lpfnWndProc = WndProc
wc.cbClsExtra = 0
wc.cbWndExtra = 0
wc.hInstance = hInstance
wc.hIcon = LoadIcon(NULL, IDI_APPLICATION)
wc.hCursor = LoadCursor(NULL, IDC_ARROW)
wc.hbrBackground = (HBRUSH) GetStockObject(WHITE_BRUSH)
wc.lpszMenuName = NULL
wc.lpszClassName = szClassName
wc.hIconSm = NULL
RegisterClassEx(&wc)
hwnd1 = CreateWindowEx(0, szClassName, szWindowName, WS_OVERLAPPEDWINDOW,CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,NULL, NULL, hInstance, NULL)
ShowWindow(hwnd1, nCmdShow)
UpdateWindow(hwnd1)
wc.lpfnWndProc = ChildProc
wc.hIcon = NULL
wc.hCursor = NULL
wc.lpszClassName = szChildClassName
RegisterClassEx(&wc)
hwnd2 = CreateWindowEx(0, szChildClassName, NULL, WS_CHILDWINDOW|WS_OVERLAPPEDWINDOW, 0, 0, 100, 100, hwnd1, NULL, hInst, NULL)
if (hwnd2==NULL){
MessageBox(NULL, "Wrong!", "adfa", MB_OKCANCEL)
return -1
}
ShowWindow(hwnd2, nCmdShow)
UpdateWindow(hwnd2)
MSG msg
while (GetMessage(&msg, NULL, NULL, NULL)){
TranslateMessage(&msg)
DispatchMessage(&msg)
}
return msg.wParam
}
LRESULT CALLBACK WndProc(HWND h1, UINT msg, WPARAM w1, LPARAM l1){
switch (msg) {
case WM_LBUTTONDOWN:
MessageBox(h1, "Frame Click", "Click!", MB_OK) return 0
default: return DefWindowProc(h1, msg, w1, l1)
}
}
LRESULT CALLBACK ChildProc(HWND h1, UINT msg, WPARAM w1, LPARAM l1){
switch (msg) {
case WM_LBUTTONDOWN:
MessageBox(h1, "View Click", "Click!", MB_OK) return 0
default: return DefWindowProc(h1, msg, w1, l1)
}
}
已改好，主要的问题是：
你在设置好子窗口类后没有调用RegisterClassEx()函数注册窗口类，导致子窗口创建不成功，我把子窗口的创建从WM_CREATE放到WINMAIN里了，你可以看看，然后做进一步修改
windows下通过调用API来创建窗口：#include<windows.h>
int main()
{
MessageBox(NULL,"Hello World!","C图形程序",MB_OK)
return 0
}
linux下通过调用图形库来创建窗口。
楼主如果是学C的话，先不要急于搞这些东西，把基础打扎实才是最重要的，GUI可以后学。基础扎实了，这些只是很简单的东西。
